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 vulnerabilities in Python 3.11 as packaged by Red Hat for RHEL 8. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that may allow arbitrary code execution or information disclosure. CVE-2026-4786 is a command injection vulnerability in the webbrowser.open() API that could lead to arbitrary code execution. Red Hat has issued an important security update (RHSA-2026:11062) providing patched python3.11 packages for various RHEL 8 architectures and CodeReady Linux Builder variants. The advisory references CVE pages for detailed impact and CVSS scores, which are not included here.
Potential Impact
Successful exploitation of CVE-2026-6100 could allow an attacker to execute arbitrary code or disclose sensitive information due to a use-after-free flaw in decompression modules. CVE-2026-4786 could enable arbitrary code execution through command injection in the webbrowser.open() API. Both vulnerabilities pose a high security risk on affected systems running vulnerable python3.11 versions.
Mitigation Recommendations
Red Hat has released updated python3.11 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the official security update RHSA-2026:11062 promptly to remediate these issues. For detailed update instructions, refer to the Red Hat article at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor advisory.
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 vulnerabilities in Python 3.11 as packaged by Red Hat for RHEL 8. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that may allow arbitrary code execution or information disclosure. CVE-2026-4786 is a command injection vulnerability in the webbrowser.open() API that could lead to arbitrary code execution. Red Hat has issued an important security update (RHSA-2026:11062) providing patched python3.11 packages for various RHEL 8 architectures and CodeReady Linux Builder variants. The advisory references CVE pages for detailed impact and CVSS scores, which are not included here.
Potential Impact
Successful exploitation of CVE-2026-6100 could allow an attacker to execute arbitrary code or disclose sensitive information due to a use-after-free flaw in decompression modules. CVE-2026-4786 could enable arbitrary code execution through command injection in the webbrowser.open() API. Both vulnerabilities pose a high security risk on affected systems running vulnerable python3.11 versions.
Mitigation Recommendations
Red Hat has released updated python3.11 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the official security update RHSA-2026:11062 promptly to remediate these issues. For detailed update instructions, refer to the Red Hat article at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:11062
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eefe29bf47b50edd94b
Added to database: 05/27/2026, 21:15:27 UTC
Last enriched: 07/03/2026, 00:53:59 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 72
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