katalyst-koi
Administration tools for Rails applications
View on Github
Activity
- Latest release
- 1w ago
- Total releases
- 107
- Cadence
- ~12 days
- Last 12 months
- 24
Reach
- Downloads
- 64.2k
- Stars
- 9
Details
- License
- MIT
- First release
- Jul 27, 2023
| Version | Released | |
|---|---|---|
5.11.4
patch
|
5.11.4
patch
Dependencies (18)
+ 10 more
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5.11.3
patch
|
5.11.3
patch
Dependencies (18)
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|
5.11.2
patch
|
5.11.2
patch
Dependencies (18)
+ 10 more
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|
5.11.1
patch
|
5.11.1
patch
Dependencies (18)
+ 10 more
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|
5.11.0
minor
|
5.11.0
minor
Dependencies (18)
+ 10 more
Changelog
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|
5.10.1
patch
|
5.10.1
patch
Dependencies (18)
+ 10 more
Changelog
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|
5.10.0
minor
|
5.10.0
minor
Dependencies (18)
+ 10 more
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|
5.9.0
minor
|
5.9.0
minor
Dependencies (18)
+ 10 more
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5.8.3
patch
|
5.8.3
patch
Dependencies (17)
+ 9 more
Changelog
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|
5.8.2
patch
|
5.8.2
patch
Dependencies (17)
+ 9 more
Changelog
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5.8.1
patch
|
5.8.1
patch
Dependencies (17)
+ 9 more
Changelog
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|
5.8.0
minor
|
5.8.0
minor
Dependencies (17)
+ 9 more
Changelog
Compare changes
|
|
4.20.1
patch
|
4.20.1
patch
Dependencies (16)
+ 8 more
Changelog
Compare changes
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|
5.7.1
patch
|
5.7.1
patch
Dependencies (16)
+ 8 more
Changelog
Compare changes
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|
5.7.0
minor
|
5.7.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.20.0
minor
|
4.20.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
5.6.0
minor
|
5.6.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
5.5.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.5.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.19.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.19.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
5.4.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.4.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
5.3.1
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.3.1
patch
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.3.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.3.0
minor
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.2.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.2.0
minor
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.1.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.1.0
minor
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.3
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.0.3
patch
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.2
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.0.2
patch
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.1
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.0.1
patch
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0
major
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
5.0.0
major
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0.beta.3
pre
|
5.0.0.beta.3
pre
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0.beta.2
pre
|
5.0.0.beta.2
pre
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0.beta.1
pre
|
5.0.0.beta.1
pre
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0.alpha.4
pre
|
5.0.0.alpha.4
pre
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0.alpha.2
pre
|
5.0.0.alpha.2
pre
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
5.0.0.alpha.1
pre
|
5.0.0.alpha.1
pre
Dependencies (15)
+ 7 more
Changelog
Compare changes
|
|
4.18.1
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.18.1
patch
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.18.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.18.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.17.1
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.17.1
patch
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.17.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.17.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.16.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.16.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.15.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.15.0
minor
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.15.1
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.15.1
patch
Dependencies (16)
+ 8 more
Changelog
Compare changes
|
|
4.14.3
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.14.3
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.14.2
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.14.2
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.14.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.14.0
minor
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.14.1
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.14.1
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.13.2
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.13.2
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.13.0
minor
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.13.0
minor
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.12.6
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.12.6
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.12.5
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.12.5
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|
|
4.12.4
patch
1 CVE
CVE-2026-44511
GHSA-4cx3-3c38-j9vv
May 07, 2026
katalyst-koi: Session cookies can be replayed after user logout
7.4
/ 10
High
Network
High
None
None
Unchanged
High
High
None
ImpactAdmin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This affects applications using Koi admin authentication where an admin session cookie may have been exposed, cached, intercepted, or otherwise retained after logout. PatchesThe issue has been patched by recording admin logout time and rejecting any admin session cookie created before the user’s most recent logout. Users should upgrade to the patched Koi releases once available. WorkaroundsKatalyst Koi recommends upgrading to the latest available version, or back porting the changes released in 5.6.0/4.20.0 ResourcesThis is an application of https://guides.rubyonrails.org/v5.2.0/security.html#replay-attacks-for-cookiestore-sessions Affected versions
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
+ 72 more Show less
4.11.1
4.11.2
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.5
4.12.6
4.13.0
4.13.2
4.14.0
4.14.1
4.14.2
4.14.3
4.15.0
4.15.1
4.16.0
4.17.0
4.17.1
4.18.0
4.18.1
4.19.0
4.2.0
4.2.0.beta.1
4.2.0.beta.2
4.2.1
4.3.0
4.3.0.beta.2
4.3.0.beta.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.4.0
4.4.1
4.5.0
4.5.0.beta.1
4.5.0.beta.2
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.6.0
4.7.0
4.7.1
4.7.2
4.7.3
4.8.0
4.8.1
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
Fixed in
4.20.0
5.6.0
References
Updated May 29, 2026 · Source: OSV.dev |
4.12.4
patch
Dependencies (14)
+ 6 more
Changelog
Compare changes
|