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): * 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 python3.9 as packaged for Red Hat Enterprise Linux 9.2. 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 released updated python3.9 packages (version 3.9.16-1.el9_2.14) to fix these issues. The advisory rates the update as Important and provides packages for multiple architectures including x86_64, ppc64le, aarch64, and s390x. No CVSS scores are provided in the advisory, but the severity is described as Important (high).
Potential Impact
Successful exploitation of CVE-2026-6100 could result in arbitrary code execution or information disclosure due to a use-after-free flaw in decompression modules. CVE-2026-4786 could allow an attacker to execute arbitrary code via command injection in the webbrowser.open() API. Both vulnerabilities pose a high security risk to systems running affected versions of python3.9 on Red Hat Enterprise Linux 9.2, potentially compromising system integrity and confidentiality.
Mitigation Recommendations
Red Hat has released updated python3.9 packages (version 3.9.16-1.el9_2.14) that address these vulnerabilities. Users should apply the available security update for python3.9 on Red Hat Enterprise Linux 9.2 as soon as possible. For detailed instructions on applying the update, refer to Red Hat's official article at https://access.redhat.com/articles/11258. No other mitigation or workaround is indicated in the advisory.
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): * 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 python3.9 as packaged for Red Hat Enterprise Linux 9.2. 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 released updated python3.9 packages (version 3.9.16-1.el9_2.14) to fix these issues. The advisory rates the update as Important and provides packages for multiple architectures including x86_64, ppc64le, aarch64, and s390x. No CVSS scores are provided in the advisory, but the severity is described as Important (high).
Potential Impact
Successful exploitation of CVE-2026-6100 could result in arbitrary code execution or information disclosure due to a use-after-free flaw in decompression modules. CVE-2026-4786 could allow an attacker to execute arbitrary code via command injection in the webbrowser.open() API. Both vulnerabilities pose a high security risk to systems running affected versions of python3.9 on Red Hat Enterprise Linux 9.2, potentially compromising system integrity and confidentiality.
Mitigation Recommendations
Red Hat has released updated python3.9 packages (version 3.9.16-1.el9_2.14) that address these vulnerabilities. Users should apply the available security update for python3.9 on Red Hat Enterprise Linux 9.2 as soon as possible. For detailed instructions on applying the update, refer to Red Hat's official article at https://access.redhat.com/articles/11258. No other mitigation or workaround is indicated in the 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-2026:19570
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eeee29bf47b50edca0b
Added to database: 05/27/2026, 21:15:26 UTC
Last enriched: 07/03/2026, 00:52:28 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 46
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