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): * python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules (CVE-2026-6100) * python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API (CVE-2026-4786) 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 security vulnerabilities in Python 3.11 as packaged by Red Hat. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that could lead to arbitrary code execution or information disclosure. CVE-2026-4786 is a command injection vulnerability in the webbrowser.open() API that could allow arbitrary code execution. Red Hat has released an updated python3.11 package for Red Hat Enterprise Linux 9.4 Extended Update Support and related variants to fix these issues. The advisory references Red Hat Bugzilla entries BZ-2457932 and BZ-2458049 for the respective CVEs. No CVSS score is provided in the advisory, but the impact is rated as Important by Red Hat.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code or cause information disclosure on affected systems running vulnerable versions of python3.11. The use-after-free in decompression modules (CVE-2026-6100) and command injection in webbrowser.open() (CVE-2026-4786) both present high security risks. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated python3.11 packages for Red Hat Enterprise Linux 9.4 Extended Update Support and related products that address these vulnerabilities. Users should apply the official Red Hat security update as described in the advisory (https://access.redhat.com/articles/11258) to remediate these issues. Patch status is confirmed as available. No additional mitigation steps are indicated by the vendor.
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): * python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules (CVE-2026-6100) * python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API (CVE-2026-4786) 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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers two security vulnerabilities in Python 3.11 as packaged by Red Hat. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that could lead to arbitrary code execution or information disclosure. CVE-2026-4786 is a command injection vulnerability in the webbrowser.open() API that could allow arbitrary code execution. Red Hat has released an updated python3.11 package for Red Hat Enterprise Linux 9.4 Extended Update Support and related variants to fix these issues. The advisory references Red Hat Bugzilla entries BZ-2457932 and BZ-2458049 for the respective CVEs. No CVSS score is provided in the advisory, but the impact is rated as Important by Red Hat.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code or cause information disclosure on affected systems running vulnerable versions of python3.11. The use-after-free in decompression modules (CVE-2026-6100) and command injection in webbrowser.open() (CVE-2026-4786) both present high security risks. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated python3.11 packages for Red Hat Enterprise Linux 9.4 Extended Update Support and related products that address these vulnerabilities. Users should apply the official Red Hat security update as described in the advisory (https://access.redhat.com/articles/11258) to remediate these issues. Patch status is confirmed as available. 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-2026:14653
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eefe29bf47b50edd59a
Added to database: 05/27/2026, 21:15:27 UTC
Last enriched: 07/03/2026, 00:53:19 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 38
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