Red Hat Security Advisory: python-markdown security update
Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * python-markdown: denial of service via malformed HTML-like sequences (CVE-2025-69534) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
CVE-2025-69534 is a denial of service vulnerability in the python-markdown package caused by malformed HTML-like sequences. This vulnerability affects Red Hat Enterprise Linux 10 and its Extended Update Support and Extended Life Cycle variants across multiple architectures. Red Hat Product Security has released an important security advisory (RHSA-2026:19155) with updated python-markdown packages to remediate this issue. The advisory references a bug fix (BZ-2444839) and provides updated package versions (python-markdown-3.5.1-6.el10_2.1) for affected systems. No CVSS score is provided, and no exploits are known to be in the wild.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by supplying malformed HTML-like sequences to the python-markdown parser. This can disrupt normal processing of markdown content, potentially impacting availability of applications or services using this library on affected Red Hat Enterprise Linux 10 systems. There are no reports of exploitation in the wild.
Mitigation Recommendations
Red Hat has released updated python-markdown packages (version 3.5.1-6.el10_2.1) that fix this denial of service vulnerability. Users of Red Hat Enterprise Linux 10 and its variants should apply the security update as described in Red Hat advisory RHSA-2026:19155. Refer to https://access.redhat.com/articles/11258 for detailed update instructions. No additional mitigations are indicated by the vendor.
Red Hat Security Advisory: python-markdown security update
Description
Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * python-markdown: denial of service via malformed HTML-like sequences (CVE-2025-69534) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-69534 is a denial of service vulnerability in the python-markdown package caused by malformed HTML-like sequences. This vulnerability affects Red Hat Enterprise Linux 10 and its Extended Update Support and Extended Life Cycle variants across multiple architectures. Red Hat Product Security has released an important security advisory (RHSA-2026:19155) with updated python-markdown packages to remediate this issue. The advisory references a bug fix (BZ-2444839) and provides updated package versions (python-markdown-3.5.1-6.el10_2.1) for affected systems. No CVSS score is provided, and no exploits are known to be in the wild.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by supplying malformed HTML-like sequences to the python-markdown parser. This can disrupt normal processing of markdown content, potentially impacting availability of applications or services using this library on affected Red Hat Enterprise Linux 10 systems. There are no reports of exploitation in the wild.
Mitigation Recommendations
Red Hat has released updated python-markdown packages (version 3.5.1-6.el10_2.1) that fix this denial of service vulnerability. Users of Red Hat Enterprise Linux 10 and its variants should apply the security update as described in Red Hat advisory RHSA-2026:19155. Refer to https://access.redhat.com/articles/11258 for detailed update instructions. No additional mitigations are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:20677
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a16097ae29bf47b50646de5
Added to database: 05/26/2026, 20:58:34 UTC
Last enriched: 06/28/2026, 00:29:18 UTC
Last updated: 07/31/2026, 19:22:56 UTC
Views: 68
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