Red Hat Security Advisory: python3 security update
Red Hat has issued a security advisory for python3 in Red Hat Enterprise Linux 8 addressing two vulnerabilities: CVE-2026-6100, a use-after-free in decompression modules leading to arbitrary code execution or information disclosure, and CVE-2026-4786, a command injection vulnerability in the webbrowser.open() API allowing arbitrary code execution. These vulnerabilities are rated as important by Red Hat Product Security. Updates are available to remediate these issues.
AI Analysis
Technical Summary
This advisory covers two security flaws in Python as packaged in Red Hat Enterprise Linux 8. CVE-2026-6100 is a use-after-free vulnerability in Python's decompression modules that could 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. Both vulnerabilities affect the python3 packages in Red Hat Enterprise Linux 8 across multiple architectures. Red Hat has released updated python3 packages to address these issues.
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 arbitrary code execution via command injection in the webbrowser.open() API. These vulnerabilities pose a high security risk to affected systems running vulnerable python3 packages.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:11077 and the referenced article https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor. Patch status is confirmed as an official fix available from Red Hat.
Red Hat Security Advisory: python3 security update
Description
Red Hat has issued a security advisory for python3 in Red Hat Enterprise Linux 8 addressing two vulnerabilities: CVE-2026-6100, a use-after-free in decompression modules leading to arbitrary code execution or information disclosure, and CVE-2026-4786, a command injection vulnerability in the webbrowser.open() API allowing arbitrary code execution. These vulnerabilities are rated as important by Red Hat Product Security. Updates are available to remediate these issues.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers two security flaws in Python as packaged in Red Hat Enterprise Linux 8. CVE-2026-6100 is a use-after-free vulnerability in Python's decompression modules that could 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. Both vulnerabilities affect the python3 packages in Red Hat Enterprise Linux 8 across multiple architectures. Red Hat has released updated python3 packages to address these issues.
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 arbitrary code execution via command injection in the webbrowser.open() API. These vulnerabilities pose a high security risk to affected systems running vulnerable python3 packages.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:11077 and the referenced article https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor. Patch status is confirmed as an official fix available from Red Hat.
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"]
- State
- PUBLISHED
Threat ID: 6a175eefe29bf47b50edd944
Added to database: 05/27/2026, 21:15:27 UTC
Last enriched: 08/10/2026, 20:08:24 UTC
Last updated: 09/14/2026, 10:01:31 UTC
Views: 79
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