Red Hat Security Advisory: python3 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 the python3 packages for Red Hat Enterprise Linux 8. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that can lead to arbitrary code execution or information disclosure. CVE-2026-4786 is an arbitrary code execution vulnerability caused by command injection in the webbrowser.open() API of CPython. The vulnerabilities affect multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has released updated python3 packages (version 3.6.8-76.el8_10) to address these issues. The advisory is classified as Important by Red Hat Product Security.
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 allows arbitrary code execution via command injection in the webbrowser.open() API, potentially enabling attackers to run malicious commands. Both vulnerabilities pose a high security risk on affected Red Hat Enterprise Linux 8 systems running the vulnerable python3 packages.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the official security update as described in the Red Hat advisory RHSA-2026:11077 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the provided patches.
Red Hat Security Advisory: python3 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 the python3 packages for Red Hat Enterprise Linux 8. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that can lead to arbitrary code execution or information disclosure. CVE-2026-4786 is an arbitrary code execution vulnerability caused by command injection in the webbrowser.open() API of CPython. The vulnerabilities affect multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has released updated python3 packages (version 3.6.8-76.el8_10) to address these issues. The advisory is classified as Important by Red Hat Product Security.
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 allows arbitrary code execution via command injection in the webbrowser.open() API, potentially enabling attackers to run malicious commands. Both vulnerabilities pose a high security risk on affected Red Hat Enterprise Linux 8 systems running the vulnerable python3 packages.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the official security update as described in the Red Hat advisory RHSA-2026:11077 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the provided patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:11077
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eefe29bf47b50edd944
Added to database: 05/27/2026, 21:15:27 UTC
Last enriched: 07/03/2026, 00:53:46 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 57
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