Red Hat Security Advisory: python3 security update
A security advisory from Red Hat addresses two vulnerabilities in Python 3 affecting Red Hat Enterprise Linux 8.8 variants. The first vulnerability (CVE-2026-6100) involves arbitrary code execution or information disclosure via a use-after-free flaw in decompression modules. The second vulnerability (CVE-2026-4786) allows arbitrary code execution through command injection in the webbrowser.open() API. Red Hat has released updates to mitigate these issues in the affected Python packages.
AI Analysis
Technical Summary
This advisory covers two security issues in Python 3 as packaged for Red Hat Enterprise Linux 8.8. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that could lead to arbitrary code execution or information disclosure. CVE-2026-4786 is a command injection vulnerability in the webbrowser.open() API that allows arbitrary code execution. Both vulnerabilities are rated as having an important security impact by Red Hat. The advisory provides updated Python 3 packages to address these issues.
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 could enable arbitrary code execution via command injection when using the webbrowser.open() API. These vulnerabilities pose a high security risk on affected systems running vulnerable Python 3 versions.
Mitigation Recommendations
Red Hat has released updated Python 3 packages for Red Hat Enterprise Linux 8.8 to address these vulnerabilities. Users should apply the provided security updates as described in the Red Hat advisory RHSA-2026:19549 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are specified; applying the official update is the recommended remediation.
Red Hat Security Advisory: python3 security update
Description
A security advisory from Red Hat addresses two vulnerabilities in Python 3 affecting Red Hat Enterprise Linux 8.8 variants. The first vulnerability (CVE-2026-6100) involves arbitrary code execution or information disclosure via a use-after-free flaw in decompression modules. The second vulnerability (CVE-2026-4786) allows arbitrary code execution through command injection in the webbrowser.open() API. Red Hat has released updates to mitigate these issues in the affected Python packages.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers two security issues in Python 3 as packaged for Red Hat Enterprise Linux 8.8. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that could lead to arbitrary code execution or information disclosure. CVE-2026-4786 is a command injection vulnerability in the webbrowser.open() API that allows arbitrary code execution. Both vulnerabilities are rated as having an important security impact by Red Hat. The advisory provides updated Python 3 packages to address these issues.
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 could enable arbitrary code execution via command injection when using the webbrowser.open() API. These vulnerabilities pose a high security risk on affected systems running vulnerable Python 3 versions.
Mitigation Recommendations
Red Hat has released updated Python 3 packages for Red Hat Enterprise Linux 8.8 to address these vulnerabilities. Users should apply the provided security updates as described in the Red Hat advisory RHSA-2026:19549 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are specified; applying the official update is the recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19549
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- State
- PUBLISHED
Threat ID: 6a175eeee29bf47b50edca26
Added to database: 05/27/2026, 21:15:26 UTC
Last enriched: 08/10/2026, 20:05:53 UTC
Last updated: 09/14/2026, 22:01:35 UTC
Views: 108
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