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ALSA-2026:2128 — Moderate: python3 security update

Affected: AlmaLinux:8: platform-python, AlmaLinux:8: platform-python-debug, AlmaLinux:8: platform-python-devel, AlmaLinux:8: python3-idle, AlmaLinux:8: python3-libs, AlmaLinux:8: python3-test, AlmaLinux:8: python3-tkinter

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.

bdu:2026-05131

BELL-CVE-2025-15367

Affected: Alpaquita:23: python3, Alpaquita:25: python3, Alpaquita:stream: python3, BellSoft Hardened Containers:23: python3, BellSoft Hardened Containers:25: python3, BellSoft Hardened Containers:stream: python3

certfr-2026-avi-0067 — De multiples vulnérabilités ont été découvertes dans CPython. Certaines d'entre elles permettent à un attaquant de prov…

certfr-2026-avi-0067

ESSA-2026:0053 — Moderate: python security update

Moderate: python security update

EUVD-2026-270947

fkie_cve-2025-15367

The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.

GHSA-g82h-mgfp-jx8g

The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.

OESA-2026-1356 — python3 security update

Affected: openEuler:24.03-LTS: python3

Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C++ (or other languages, depending on the chosen implementation). Python is also usable as an extension language for applications written in other languages that need easy-to-use scripting or automation interfaces. Security Fix(es):

When passing data to the b64decode(), standard_b64decode(), and urlsafe_b64decode() functions in the "base64" module the characters "+/" will always be accepted, regardless of the value of "altchars" parameter, typically used to establish an "alternative base64 alphabet" such as the URL safe alphabet. This behavior matches what is recommended in earlier base64 RFCs, but newer RFCs now recommend either dropping characters outside the specified base64 alphabet or raising an error. The old behavior has the possibility of causing data integrity issues.

This behavior can only be insecure if your application uses an alternate base64 alphabet (without "+/"). If your application does not use the "altchars" parameter or the urlsafe_b64decode() function, then your application does not use an alternative base64 alphabet.

The attached patches DOES NOT make the base64-decode behavior raise an error…

RHSA-2026:16174 — Red Hat Security Advisory: Red Hat AI Inference Server 3.3.3 (Spyre)

libxslt: Processing web content may disclose sensitive information libtiff: Segment fault in libtiff in TIFFReadRGBATileExt() leading to denial of service cpython: Excessive read buffering DoS in http.client gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification cpython: IMAP command injection in user-controlled commands cpython: POP3 command injection in user-controlled commands python: protobuf: Protobuf: Denial of Service due to recursion depth bypass cpython: email header injection due to unquoted newlines libvpx: Heap buffer overflow in libvpx openssh: OpenSSH GSSAPI: Information disclosure or denial of service due to uninitialized variables libarchive: Infinite Loop Denial of Service in RAR5 Decompression via archive_read_data() in libarchive libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing python: Python: Command-line option injection in webbrowser.open() via crafted URLs libarchive: libarchive: Arbitrary code execution via integer overflow in ISO9660 image processing gdk-pixbuf: gdk-pixbuf: Denial of Service via heap-based buffer overflow when processing a specially crafted JPEG image libpng: libpng: Denial of service and information disclosure via heap buffer over-read in png_image_finish_read libpng: libpng: Information disclosure and denial of service via integer truncation in simplified write API giflib: Giflib: Double-free vulnerability leading to memory corruption…

SUSE-SU-2026:0590-1 — Security update for python

Security update for python

UBUNTU-CVE-2025-15367

Affected: Ubuntu:Pro:14.04:LTS: python2.7, Ubuntu:Pro:14.04:LTS: python3.4, Ubuntu:Pro:14.04:LTS: python3.5, Ubuntu:Pro:16.04:LTS: python2.7, Ubuntu:Pro:16.04:LTS: python3.5, Ubuntu:Pro:18.04:LTS: python2.7, Ubuntu:Pro:18.04:LTS: python3.6, Ubuntu:Pro:18.04:LTS: python3.7, Ubuntu:Pro:18.04:LTS: python3.8, Ubuntu:Pro:20.04:LTS: python3.8 and 8 more

The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.

WID-SEC-W-2026-0209 — Cpython: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Cpython ausnutzen, um Dateien zu manipulieren oder beliebigen Code auszuführen.