Red Hat Security Advisory: python-markdown security update
A denial of service vulnerability (CVE-2025-69534) exists in the python-markdown package used in Red Hat Enterprise Linux 10. 0 Extended Update Support. The issue is triggered by malformed HTML-like sequences processed by python-markdown. Red Hat has issued an important security advisory with updated packages to address this vulnerability.
AI Analysis
Technical Summary
The vulnerability CVE-2025-69534 affects the python-markdown package in Red Hat Enterprise Linux 10.0 EUS. It allows denial of service via malformed HTML-like sequences, classified under CWE-617 (Reachable Assertion). Red Hat Product Security has released updated python-markdown packages to fix this issue. The advisory RHSA-2026:20677 provides details and updated packages for multiple architectures including x86_64, s390x, ppc64le, and aarch64. No CVSS score is provided in the advisory, but the severity is rated as Important by Red Hat.
Potential Impact
The vulnerability can cause denial of service conditions when python-markdown processes malformed HTML-like input sequences. This could disrupt applications or services relying on python-markdown for markdown rendering. There are no known exploits in the wild at this time. The impact is limited to denial of service and does not indicate code execution or data breach.
Mitigation Recommendations
Red Hat has released updated python-markdown packages for affected Red Hat Enterprise Linux 10.0 Extended Update Support versions. Users should apply the security update as described in Red Hat advisory RHSA-2026:20677 and the referenced article https://access.redhat.com/articles/11258. Applying these official patches will remediate the vulnerability. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: python-markdown security update
Description
A denial of service vulnerability (CVE-2025-69534) exists in the python-markdown package used in Red Hat Enterprise Linux 10. 0 Extended Update Support. The issue is triggered by malformed HTML-like sequences processed by python-markdown. Red Hat has issued an important security advisory with updated packages to address this vulnerability.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-69534 affects the python-markdown package in Red Hat Enterprise Linux 10.0 EUS. It allows denial of service via malformed HTML-like sequences, classified under CWE-617 (Reachable Assertion). Red Hat Product Security has released updated python-markdown packages to fix this issue. The advisory RHSA-2026:20677 provides details and updated packages for multiple architectures including x86_64, s390x, ppc64le, and aarch64. No CVSS score is provided in the advisory, but the severity is rated as Important by Red Hat.
Potential Impact
The vulnerability can cause denial of service conditions when python-markdown processes malformed HTML-like input sequences. This could disrupt applications or services relying on python-markdown for markdown rendering. There are no known exploits in the wild at this time. The impact is limited to denial of service and does not indicate code execution or data breach.
Mitigation Recommendations
Red Hat has released updated python-markdown packages for affected Red Hat Enterprise Linux 10.0 Extended Update Support versions. Users should apply the security update as described in Red Hat advisory RHSA-2026:20677 and the referenced article https://access.redhat.com/articles/11258. Applying these official patches will remediate the vulnerability. No additional mitigation steps 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: 5/26/2026, 8:58:34 PM
Last enriched: 5/26/2026, 11:18:33 PM
Last updated: 5/27/2026, 4:53:22 AM
Views: 2
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