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8.1
Update Python 3.12 to Fix Multiple Security Flaws
published 6 months ago
Summary
Python 3.12 has multiple security flaws that could allow attackers to execute malicious code, disclose sensitive information, or cause your system to crash. These issues affect how Python handles user input and external data. To protect your system, update to the latest version of Python 3.12 as soon as possible.
What to do
- Update rocky python3.12 to version 0:3.12.13-2.el8_10.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Rocky Linux:8 | rocky | python3.12 |
< 0:3.12.13-2.el8_10 Fix: upgrade to 0:3.12.13-2.el8_10
|
Original advisory text
Important: python3.12 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):
* expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (CVE-2025-59375)
* python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)
* cpython: Out-of-memory when loading Plist (CVE-2025-13837)
* cpython: Header injection via newlines in data URL mediatype in Python (CVE-2025-15282)
* cpython: Header injection in http.cookies.Morsel in Python (CVE-2026-0672)
* 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: 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)
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.
Security Fix(es):
* expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (CVE-2025-59375)
* python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)
* cpython: Out-of-memory when loading Plist (CVE-2025-13837)
* cpython: Header injection via newlines in data URL mediatype in Python (CVE-2025-15282)
* cpython: Header injection in http.cookies.Morsel in Python (CVE-2026-0672)
* 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: 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)
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.
References
- https://errata.rockylinux.org/RLSA-2026:10950 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2395108 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2408891 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2418084 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2431366 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2431374 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2444691 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448168 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448181 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2457409 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2457932 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2458049 Third Party Advisory
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker full control (estimated)
Timeline
Published28 Apr 2026
Updated28 Apr 2026
First seen28 Apr 2026
Sources
RLSA-2026:10950 · OSV
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