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 vulnerabilities in Python as packaged by Red Hat for 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 a command injection vulnerability in the webbrowser.open() API that allows arbitrary code execution. Both vulnerabilities are rated with high severity by Red Hat Product Security. The update fixes these issues in python3 packages across multiple supported architectures including x86_64, s390x, ppc64le, and aarch64. The advisory references Red Hat's errata RHSA-2026:11077 and provides package updates to remediate the vulnerabilities.
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 through command injection in the webbrowser.open() API. Both vulnerabilities pose a high security risk on affected systems running vulnerable Python versions. No known exploits in the wild have been reported at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:11077 and the referenced article https://access.redhat.com/articles/11258. Applying these updates will remediate the vulnerabilities. No additional mitigation steps are indicated by the vendor 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: 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-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers two vulnerabilities in Python as packaged by Red Hat for 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 a command injection vulnerability in the webbrowser.open() API that allows arbitrary code execution. Both vulnerabilities are rated with high severity by Red Hat Product Security. The update fixes these issues in python3 packages across multiple supported architectures including x86_64, s390x, ppc64le, and aarch64. The advisory references Red Hat's errata RHSA-2026:11077 and provides package updates to remediate the vulnerabilities.
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 through command injection in the webbrowser.open() API. Both vulnerabilities pose a high security risk on affected systems running vulnerable Python versions. No known exploits in the wild have been reported at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated python3 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:11077 and the referenced article https://access.redhat.com/articles/11258. Applying these updates will remediate the vulnerabilities. No additional mitigation steps are indicated by the vendor 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-2026:11077
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eefe29bf47b50edd944
Added to database: 5/27/2026, 9:15:27 PM
Last enriched: 5/27/2026, 9:25:27 PM
Last updated: 5/29/2026, 4:58:03 AM
Views: 5
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