AWSSDK.Extensions.CloudFront.Signers
The official AWS SDK for .NET. For more information on the AWS SDK for .NET, see our web site:
View on Github
Activity
- Latest release
- 1w ago
- Total releases
- 80
- Cadence
- ~4 days
- Last 12 months
- 63
Reach
- Stars
- 140
Details
- License
- Apache-2.0
- First release
- Aug 28, 2024
| Version | Released | |
|---|---|---|
4.0.101.2
patch
| ||
4.0.101.1
patch
| ||
4.0.101
patch
| ||
4.0.100.10
patch
| ||
4.0.100.9
patch
| ||
4.0.100.8
patch
| ||
4.0.100.7
patch
| ||
4.0.100.6
patch
| ||
4.0.100.5
patch
| ||
4.0.100.4
patch
| ||
4.0.100.3
patch
| ||
4.0.100.2
patch
| ||
4.0.100.1
patch
| ||
4.0.100
patch
| ||
4.0.1.17
patch
| ||
4.0.1.16
patch
| ||
4.0.1.15
patch
| ||
4.0.1.14
patch
| ||
4.0.1.13
patch
| ||
4.0.1.12
patch
| ||
4.0.1.11
patch
| ||
4.0.1.10
patch
| ||
4.0.1.9
patch
| ||
4.0.1.8
patch
| ||
4.0.1.7
patch
| ||
4.0.1.6
patch
| ||
4.0.1.5
patch
| ||
4.0.1.4
patch
| ||
4.0.1.3
patch
| ||
4.0.1.2
patch
| ||
4.0.1.1
patch
| ||
4.0.1
patch
| ||
4.0.0.36
patch
| ||
4.0.0.35
patch
| ||
4.0.0.34
patch
| ||
4.0.0.33
patch
| ||
4.0.0.32
patch
| ||
4.0.0.31
patch
| ||
4.0.0.30
patch
| ||
4.0.0.29
patch
| ||
4.0.0.28
patch
| ||
4.0.0.27
patch
| ||
4.0.0.26
patch
| ||
4.0.0.25
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev | ||
4.0.0.24
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev | ||
4.0.0.23
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev | ||
4.0.0.22
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev | ||
4.0.0.21
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev | ||
4.0.0.19
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev | ||
4.0.0.18
patch
1 CVE
GHSA-mvm6-f9r3-fgfx
Mar 27, 2026
AWS SDK for .NET: Improper escaping of special characters in CloudFront policy document construction
High
Network
Low
None
None
SummaryThis notification is related to the CloudFront signing utilities in the AWS SDK for .NET, which are used to generate Amazon CloudFront signed URLs and signed cookies. A defense-in-depth enhancement has been implemented to improve handling of special characters, such as double quotes and backslashes, in input values. ImpactThe CloudFront signing utilities build policy documents that define access restrictions for signed URLs and cookies. If an application passes unsanitized input containing special characters to these utilities, the resulting policy document may not reflect the application's intended access restrictions. While the SDK was functioning safely within the requirements of the shared responsibility model, additional safeguards have been added to support secure customer implementations. Applications that already follow AWS security best practices for input validation are not impacted. Impacted versions:
PatchesOn February 25th, 2026, an enhancement was made to the AWS SDK for .NET CloudFront signing utilities. The enhancement ensures that special characters in input values are correctly handled. We recommend upgrading to the latest version. WorkaroundsNo workarounds are needed, but customers should ensure that your application is following security best practices:
ReferencesIf there are any questions or comments about this advisory, contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue. AcknowledgementAWS SDK for .NET thanks the Amazon Inspector Security Research team for identifying this issue and working through the coordinated process together. Affected versions
4.0.0
4.0.0.1
4.0.0.10
4.0.0.11
4.0.0.12
4.0.0.13
4.0.0.14
4.0.0.15
4.0.0.16
4.0.0.17
4.0.0.18
4.0.0.19
+ 14 more Show less
4.0.0.2
4.0.0.20
4.0.0.21
4.0.0.22
4.0.0.23
4.0.0.24
4.0.0.25
4.0.0.3
4.0.0.4
4.0.0.5
4.0.0.6
4.0.0.7
4.0.0.8
4.0.0.9
Fixed in
4.0.0.26
References Updated Mar 27, 2026 · Source: OSV.dev |