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: 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
Red Hat Product Security issued an advisory for Python vulnerabilities affecting Red Hat Enterprise Linux 9.4 Extended Update Support and related distributions. The key security issues include CVE-2026-4786, which allows arbitrary code execution through command injection in the webbrowser.open() API, and CVE-2026-6100, an arbitrary code execution or information disclosure vulnerability caused by a use-after-free in decompression modules. The advisory references updated Python 3.9.18-3.el9_4.13 packages as the remediation. No CVSS score is provided in the advisory, but the severity is rated as Important by Red Hat.
Potential Impact
Successful exploitation of CVE-2026-4786 could allow an attacker to execute arbitrary code via command injection in the webbrowser.open() API. CVE-2026-6100 could lead to arbitrary code execution or information disclosure due to a use-after-free vulnerability in decompression modules. These vulnerabilities affect Python installations on Red Hat Enterprise Linux 9.4 Extended Update Support and related variants, potentially compromising affected systems if exploited.
Mitigation Recommendations
Red Hat has released updated Python 3.9 packages (version 3.9.18-3.el9_4.13) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.4 Extended Update Support and related distributions should apply these official updates promptly. For detailed update instructions, refer to Red Hat's official article at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated in the advisory.
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: 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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security issued an advisory for Python vulnerabilities affecting Red Hat Enterprise Linux 9.4 Extended Update Support and related distributions. The key security issues include CVE-2026-4786, which allows arbitrary code execution through command injection in the webbrowser.open() API, and CVE-2026-6100, an arbitrary code execution or information disclosure vulnerability caused by a use-after-free in decompression modules. The advisory references updated Python 3.9.18-3.el9_4.13 packages as the remediation. No CVSS score is provided in the advisory, but the severity is rated as Important by Red Hat.
Potential Impact
Successful exploitation of CVE-2026-4786 could allow an attacker to execute arbitrary code via command injection in the webbrowser.open() API. CVE-2026-6100 could lead to arbitrary code execution or information disclosure due to a use-after-free vulnerability in decompression modules. These vulnerabilities affect Python installations on Red Hat Enterprise Linux 9.4 Extended Update Support and related variants, potentially compromising affected systems if exploited.
Mitigation Recommendations
Red Hat has released updated Python 3.9 packages (version 3.9.18-3.el9_4.13) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.4 Extended Update Support and related distributions should apply these official updates promptly. For detailed update instructions, refer to Red Hat's official article at https://access.redhat.com/articles/11258. No additional mitigation steps are 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-2026:19589
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a175eeee29bf47b50edca12
Added to database: 05/27/2026, 21:15:26 UTC
Last enriched: 07/03/2026, 00:51:50 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 50
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