cpython: email header injection due to unquoted newlines

A flaw was found in the email module in the Python standard library. When serializing an email message, the BytesGenerator class fails to properly quote newline characters for email headers. This issue is exploitable when the LiteralHeader class is used as it does not respect email folding rules,...

cpython: email header injection due to unquoted newlines

A flaw was found in the email module in the Python standard library. When serializing an email message, the BytesGenerator class fails to properly quote newline characters for email headers. This issue is exploitable when the LiteralHeader class is used as it does not respect email folding rules,...

OESA-2026-1461 python3 security update

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...

BIT-LIBPYTHON-2025-11468 Folding email comments of unfoldable characters doesn't preserve parenthesis

When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized...

python -- several security vulnerabilities

The Python project announces a new release with several security fixes: CVE-2026-1299: gh-144125: BytesGenerator will now refuse to serialize write headers that are unsafely folded or delimited; see verifygeneratedheaders. Contributed by Bas Bloemsaat and Petr Viktorin in gh-121650. gh-143935:...

Security update for python311

This update for python311 fixes the following issues: CVE-2025-4516: Fixed blocking DecodeError handling vulnerability, which could lead to DoS. bsc1243273 Update to 3.11.12: gh-105704: When using urllib.parse.urlsplit and urllib.parse.urlparse host parsing would not reject domain names containin...

Security update for python311

This update for python311 fixes the following issues: Updated to 3.11.12: gh-131809: Updated bundled libexpat to 2.7.1 gh-131261: Upgraded to libexpat 2.7.0 CVE-2025-0938: Fixed functions urllib.parse.urlsplit and urlparse accepting domain names including square brackets bsc1236705 gh-121284: Fix...