Red Hat Security Advisory: 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): * cpython: wsgiref.headers.Headers allows header newline injection in Python (CVE-2026-0865) * cpython: IMAP command injection in user-controlled commands (CVE-2025-15366) * cpython: POP3 command injection in user-controlled commands (CVE-2025-15367) * cpython: email header injection due to unquoted newlines (CVE-2026-1299) 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 four vulnerabilities in the python3.12 package for Red Hat Enterprise Linux 8: CVE-2025-15366 and CVE-2025-15367 involve command injection vulnerabilities in IMAP and POP3 user-controlled commands, respectively; CVE-2026-0865 involves header newline injection in wsgiref.headers.Headers; and CVE-2026-1299 involves email header injection due to unquoted newlines. These issues could allow injection attacks through crafted inputs in Python's standard libraries. The advisory provides updated python3.12 packages that address these vulnerabilities across multiple supported architectures.
Potential Impact
The vulnerabilities allow injection attacks via user-controlled inputs in Python's IMAP and POP3 command handling and header processing, potentially leading to command injection or header injection attacks. The impact is rated moderate by Red Hat, indicating a security risk that could be exploited to affect applications using these Python components.
Mitigation Recommendations
Red Hat has released updated python3.12 packages for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as detailed in the Red Hat advisory RHSA-2026:4463 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are indicated; applying the official update is the recommended remediation.
Red Hat Security Advisory: python3.12 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: IMAP command injection in user-controlled commands (CVE-2025-15366) * cpython: POP3 command injection in user-controlled commands (CVE-2025-15367) * cpython: email header injection due to unquoted newlines (CVE-2026-1299) 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 advisory covers four vulnerabilities in the python3.12 package for Red Hat Enterprise Linux 8: CVE-2025-15366 and CVE-2025-15367 involve command injection vulnerabilities in IMAP and POP3 user-controlled commands, respectively; CVE-2026-0865 involves header newline injection in wsgiref.headers.Headers; and CVE-2026-1299 involves email header injection due to unquoted newlines. These issues could allow injection attacks through crafted inputs in Python's standard libraries. The advisory provides updated python3.12 packages that address these vulnerabilities across multiple supported architectures.
Potential Impact
The vulnerabilities allow injection attacks via user-controlled inputs in Python's IMAP and POP3 command handling and header processing, potentially leading to command injection or header injection attacks. The impact is rated moderate by Red Hat, indicating a security risk that could be exploited to affect applications using these Python components.
Mitigation Recommendations
Red Hat has released updated python3.12 packages for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as detailed in the Red Hat advisory RHSA-2026:4463 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are indicated; 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-2026:4463
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-15367","CVE-2026-0865","CVE-2026-1299"]
- Cvss Version
- null
Threat ID: 6a175eeee29bf47b50edc5f0
Added to database: 05/27/2026, 21:15:26 UTC
Last enriched: 07/03/2026, 00:30:35 UTC
Last updated: 07/31/2026, 19:22:53 UTC
Views: 75
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