Red Hat Security Advisory: python3.14 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): * cpython: wsgiref.headers.Headers allows header newline injection in Python (CVE-2026-0865) * cpython: CPython: Logging Bypass in Legacy .pyc File Handling (CVE-2026-2297) * cpython: Incomplete control character validation in http.cookies (CVE-2026-3644) * cpython: Stack overflow parsing XML with deeply nested DTD content models (CVE-2026-4224) * python: Python: Command-line option injection in webbrowser.open() via crafted URLs (CVE-2026-4519) * python: Python: HTTP header injection via CR/LF in proxy tunnel headers (CVE-2026-1502) * 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) * python: Python: Information disclosure and arbitrary code execution via remote debugging with a malicious process. (CVE-2026-5713) 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 Red Hat security advisory covers a set of nine vulnerabilities affecting the python3.14 package in Red Hat Enterprise Linux 10 and related products. The issues include CVE-2026-0865 (header newline injection in wsgiref.headers.Headers), CVE-2026-2297 (logging bypass in legacy .pyc handling), CVE-2026-3644 (incomplete control character validation in http.cookies), CVE-2026-4224 (stack overflow parsing deeply nested XML DTDs), CVE-2026-4519 (command-line option injection in webbrowser.open()), CVE-2026-1502 (HTTP header injection via CR/LF in proxy tunnel headers), CVE-2026-6100 (arbitrary code execution or info disclosure via use-after-free in decompression modules), CVE-2026-4786 (arbitrary code execution via command injection in webbrowser.open() API), and CVE-2026-5713 (information disclosure and arbitrary code execution via remote debugging). The advisory provides updated python3.14 packages that address these vulnerabilities for multiple architectures and variants of Red Hat Enterprise Linux 10 and CodeReady Linux Builder. No CVSS scores are provided in the advisory; users are directed to individual CVE pages for detailed scoring and impact information.
Potential Impact
The vulnerabilities collectively allow for various security impacts including header injection, logging bypass, stack overflow, command injection, arbitrary code execution, and information disclosure. These issues could be exploited by attackers to execute arbitrary code, bypass security controls, or disclose sensitive information on affected systems running vulnerable versions of python3.14. The advisory rates the overall security impact as Important (high).
Mitigation Recommendations
Red Hat has released updated python3.14 packages for Red Hat Enterprise Linux 10 and related products that fix these vulnerabilities. Users should apply the provided security update as detailed in the Red Hat advisory RHSA-2026:19019 to remediate these issues. For update instructions and package details, refer to https://access.redhat.com/articles/11258. No indication is given that no action is required or that these issues are already mitigated without patching, so applying the update is recommended.
Red Hat Security Advisory: python3.14 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): * cpython: wsgiref.headers.Headers allows header newline injection in Python (CVE-2026-0865) * cpython: CPython: Logging Bypass in Legacy .pyc File Handling (CVE-2026-2297) * cpython: Incomplete control character validation in http.cookies (CVE-2026-3644) * cpython: Stack overflow parsing XML with deeply nested DTD content models (CVE-2026-4224) * python: Python: Command-line option injection in webbrowser.open() via crafted URLs (CVE-2026-4519) * python: Python: HTTP header injection via CR/LF in proxy tunnel headers (CVE-2026-1502) * 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) * python: Python: Information disclosure and arbitrary code execution via remote debugging with a malicious process. (CVE-2026-5713) 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 Red Hat security advisory covers a set of nine vulnerabilities affecting the python3.14 package in Red Hat Enterprise Linux 10 and related products. The issues include CVE-2026-0865 (header newline injection in wsgiref.headers.Headers), CVE-2026-2297 (logging bypass in legacy .pyc handling), CVE-2026-3644 (incomplete control character validation in http.cookies), CVE-2026-4224 (stack overflow parsing deeply nested XML DTDs), CVE-2026-4519 (command-line option injection in webbrowser.open()), CVE-2026-1502 (HTTP header injection via CR/LF in proxy tunnel headers), CVE-2026-6100 (arbitrary code execution or info disclosure via use-after-free in decompression modules), CVE-2026-4786 (arbitrary code execution via command injection in webbrowser.open() API), and CVE-2026-5713 (information disclosure and arbitrary code execution via remote debugging). The advisory provides updated python3.14 packages that address these vulnerabilities for multiple architectures and variants of Red Hat Enterprise Linux 10 and CodeReady Linux Builder. No CVSS scores are provided in the advisory; users are directed to individual CVE pages for detailed scoring and impact information.
Potential Impact
The vulnerabilities collectively allow for various security impacts including header injection, logging bypass, stack overflow, command injection, arbitrary code execution, and information disclosure. These issues could be exploited by attackers to execute arbitrary code, bypass security controls, or disclose sensitive information on affected systems running vulnerable versions of python3.14. The advisory rates the overall security impact as Important (high).
Mitigation Recommendations
Red Hat has released updated python3.14 packages for Red Hat Enterprise Linux 10 and related products that fix these vulnerabilities. Users should apply the provided security update as detailed in the Red Hat advisory RHSA-2026:19019 to remediate these issues. For update instructions and package details, refer to https://access.redhat.com/articles/11258. No indication is given that no action is required or that these issues are already mitigated without patching, so applying the update is recommended.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19019
- Cve Count
- 9
- Additional Cves
- ["CVE-2026-1502","CVE-2026-2297","CVE-2026-3644","CVE-2026-4224","CVE-2026-4519","CVE-2026-4786","CVE-2026-5713","CVE-2026-6100"]
- Cvss Version
- null
Threat ID: 6a175eeee29bf47b50edd223
Added to database: 05/27/2026, 21:15:26 UTC
Last enriched: 07/03/2026, 00:27:56 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 129
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