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 Python as distributed by Red Hat for RHEL 8.6. 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. Red Hat has released updated python3 packages for affected RHEL 8.6 variants to address these issues. The advisory references Red Hat Bugzilla entries BZ-2457932 and BZ-2458049 for the respective CVEs. No CVSS scores are provided in the advisory, but the severity is rated as important.
Potential Impact
Successful exploitation of CVE-2026-6100 could allow an attacker to execute arbitrary code or disclose 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 risk to affected systems running vulnerable Python versions on Red Hat Enterprise Linux 8.6, potentially compromising system integrity or confidentiality.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8.6 variants that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:17619 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. No additional mitigation steps are specified or required beyond applying the official update.
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 Python as distributed by Red Hat for RHEL 8.6. 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. Red Hat has released updated python3 packages for affected RHEL 8.6 variants to address these issues. The advisory references Red Hat Bugzilla entries BZ-2457932 and BZ-2458049 for the respective CVEs. No CVSS scores are provided in the advisory, but the severity is rated as important.
Potential Impact
Successful exploitation of CVE-2026-6100 could allow an attacker to execute arbitrary code or disclose 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 risk to affected systems running vulnerable Python versions on Red Hat Enterprise Linux 8.6, potentially compromising system integrity or confidentiality.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8.6 variants that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:17619 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. No additional mitigation steps are specified or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:17619
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eeee29bf47b50edd23f
Added to database: 05/27/2026, 21:15:26 UTC
Last enriched: 07/03/2026, 00:52:47 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 60
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