Markdown
A Python implementation of John Gruber’s Markdown with Extension support.
View on Github
Activity
- Latest release
- 1w ago
- Total releases
- 64
- Cadence
- ~2 months
- Last 12 months
- 7
Reach
- Stars
- 4.3k
Details
- License
- BSD-3-Clause
- First release
- Feb 18, 2008
| Version | Released | |
|---|---|---|
3.11.2
patch
| ||
3.11.1
patch
| ||
3.11
minor
| ||
3.10.3
patch
| ||
3.10.2
patch
| ||
3.10.1
patch
| ||
3.10
minor
| ||
3.9
minor
| ||
3.8.2
patch
| ||
3.8.1
patch
| ||
3.8
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.7
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.6
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.5.2
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.5.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.5
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.4.4
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.4.3
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.4.2
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.4.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.4
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.7
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.6
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.5
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.4
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.3
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.2
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.3
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.2.2
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.2.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.2
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.1.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.1
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.0.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
3.0
major
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.11
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.10
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.9
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.8
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.7
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.6
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.5
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.4
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.3
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.2
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.6
minor
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.5.2
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
+ 42 more Show less
2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev | ||
2.5.1
patch
1 CVE
CVE-2025-69534
GHSA-5wmx-573v-2qwq
PYSEC-2026-89
Mar 05, 2026
Python-Markdown has an Uncaught Exception
Medium
Network
Low
None
None
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. Affected versions
1.7
2.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.2.0
2.2.1
2.3
2.3.1
2.4
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2.4.1
2.5
2.5.1
2.5.2
2.6
2.6.1
2.6.10
2.6.11
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.6.9
3.0
3.0.1
3.1
3.1.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.8
Fixed in
3.8.1
References
Updated Sep 10, 2026 · Source: OSV.dev |