Red Hat Security Advisory: python3.11 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: Excessive read buffering DoS in http.client (CVE-2025-13836) * 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
This advisory covers two vulnerabilities in the CPython implementation of Python 3.12. CVE-2025-13836 involves excessive read buffering in the http.client module that can lead to denial of service. CVE-2025-12084 involves a quadratic time complexity algorithm in xml.dom.minidom, which can also cause denial of service through resource exhaustion. Red Hat has released updated python3.12 packages for Red Hat Enterprise Linux 10.0 Extended Update Support and associated builder products to address these issues. The advisory references fixes tracked under Bugzilla entries BZ-2418078 and BZ-2418655. No CVSS scores are provided in the advisory, but the impact is rated moderate.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service by exhausting system resources due to excessive buffering or inefficient algorithmic complexity. This can disrupt applications or services relying on the affected Python modules. There is no indication of code execution or data compromise. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated python3.12 packages for Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder products that address these vulnerabilities. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:2233) and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified. Patch status is confirmed as fixed in the updated packages.
Red Hat Security Advisory: python3.11 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: Excessive read buffering DoS in http.client (CVE-2025-13836) * 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
This advisory covers two vulnerabilities in the CPython implementation of Python 3.12. CVE-2025-13836 involves excessive read buffering in the http.client module that can lead to denial of service. CVE-2025-12084 involves a quadratic time complexity algorithm in xml.dom.minidom, which can also cause denial of service through resource exhaustion. Red Hat has released updated python3.12 packages for Red Hat Enterprise Linux 10.0 Extended Update Support and associated builder products to address these issues. The advisory references fixes tracked under Bugzilla entries BZ-2418078 and BZ-2418655. No CVSS scores are provided in the advisory, but the impact is rated moderate.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service by exhausting system resources due to excessive buffering or inefficient algorithmic complexity. This can disrupt applications or services relying on the affected Python modules. There is no indication of code execution or data compromise. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated python3.12 packages for Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder products that address these vulnerabilities. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:2233) and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified. Patch status is confirmed as fixed in the updated packages.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:2233
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-13836"]
Threat ID: 6a3da1c54853345fc181ff49
Added to database: 06/25/2026, 21:46:45 UTC
Last enriched: 06/25/2026, 21:56:56 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 27
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