Red Hat Security Advisory: python3.9 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 3.9 as packaged by Red Hat Enterprise Linux 9.2. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that may 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 are addressed by updated python3.9 packages provided by Red Hat. The advisory references Red Hat's errata RHSA-2026:19570 and provides package updates for multiple architectures. 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 sensitive information due to a use-after-free flaw in decompression modules. CVE-2026-4786 could allow arbitrary code execution through command injection in the webbrowser.open() API. These vulnerabilities could compromise the confidentiality, integrity, and availability of affected systems running vulnerable Python 3.9 versions on Red Hat Enterprise Linux 9.2. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated python3.9 packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 9.2 should apply the python3.9 security update as described in Red Hat advisory RHSA-2026:19570 and the referenced article https://access.redhat.com/articles/11258. Applying these official patches is the recommended remediation. Patch status is confirmed as available from the vendor advisory.
Red Hat Security Advisory: python3.9 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 3.9 as packaged by Red Hat Enterprise Linux 9.2. CVE-2026-6100 is a use-after-free vulnerability in decompression modules that may 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 are addressed by updated python3.9 packages provided by Red Hat. The advisory references Red Hat's errata RHSA-2026:19570 and provides package updates for multiple architectures. 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 sensitive information due to a use-after-free flaw in decompression modules. CVE-2026-4786 could allow arbitrary code execution through command injection in the webbrowser.open() API. These vulnerabilities could compromise the confidentiality, integrity, and availability of affected systems running vulnerable Python 3.9 versions on Red Hat Enterprise Linux 9.2. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated python3.9 packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 9.2 should apply the python3.9 security update as described in Red Hat advisory RHSA-2026:19570 and the referenced article https://access.redhat.com/articles/11258. Applying these official patches is the recommended remediation. Patch status is confirmed as available from 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-2026:19570
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eeee29bf47b50edca0b
Added to database: 5/27/2026, 9:15:26 PM
Last enriched: 5/27/2026, 9:21:41 PM
Last updated: 5/29/2026, 3:49:52 PM
Views: 9
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