Red Hat Security Advisory: python3.9 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): * cpython: python: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service (CVE-2025-12084) 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-2025-12084 is a denial of service vulnerability in the Python 3 cpython implementation caused by a quadratic algorithm in the xml.dom.minidom module. This flaw can be triggered to cause excessive resource consumption leading to denial of service. Red Hat has issued a security advisory (RHSA-2026:2713) providing updated python3 packages for Red Hat Enterprise Linux 7 Extended Lifecycle Support to remediate this issue. The advisory rates the impact as moderate and references the CVE for detailed scoring and acknowledgments.
Potential Impact
The vulnerability allows an attacker to cause a denial of service condition by exploiting the quadratic algorithm in xml.dom.minidom, potentially leading to resource exhaustion. This can disrupt availability of services or applications using the affected Python 3 module on Red Hat Enterprise Linux 7 Extended Lifecycle Support systems.
Mitigation Recommendations
Red Hat has released updated python3 packages that fix this vulnerability. Users of Red Hat Enterprise Linux 7 Extended Lifecycle Support should apply the security update as described in Red Hat advisory RHSA-2026:2713 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation is required beyond applying the official patch.
Red Hat Security Advisory: python3.9 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): * cpython: python: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service (CVE-2025-12084) 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-2025-12084 is a denial of service vulnerability in the Python 3 cpython implementation caused by a quadratic algorithm in the xml.dom.minidom module. This flaw can be triggered to cause excessive resource consumption leading to denial of service. Red Hat has issued a security advisory (RHSA-2026:2713) providing updated python3 packages for Red Hat Enterprise Linux 7 Extended Lifecycle Support to remediate this issue. The advisory rates the impact as moderate and references the CVE for detailed scoring and acknowledgments.
Potential Impact
The vulnerability allows an attacker to cause a denial of service condition by exploiting the quadratic algorithm in xml.dom.minidom, potentially leading to resource exhaustion. This can disrupt availability of services or applications using the affected Python 3 module on Red Hat Enterprise Linux 7 Extended Lifecycle Support systems.
Mitigation Recommendations
Red Hat has released updated python3 packages that fix this vulnerability. Users of Red Hat Enterprise Linux 7 Extended Lifecycle Support should apply the security update as described in Red Hat advisory RHSA-2026:2713 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation is required beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:2713
- Cve Count
- 1
Threat ID: 6a3da1c54853345fc181fc79
Added to database: 06/25/2026, 21:46:45 UTC
Last enriched: 06/25/2026, 21:56:30 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 41
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.