CVE-2025-11468

Email Client - Info Disclosure

Title source: llm

Description

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.

References (9)

[Patch] https://github.com/python/cpython/commit/003b8315669b9f08b1010a49071f73f15f818094

[Various Sources] https://mail.python.org/archives/list/[email protected]/thread/FELSEOLBI2QR6YLG6Q7VYF7FWSGQTKLI/

[Patch] https://github.com/python/cpython/commit/17d1490aa97bd6b98a42b1a9b324ead84e7fd8a2

[Patch] https://github.com/python/cpython/commit/61614a5e5056e4f61ced65008d4576f3df34acb6

View Patch ZIP pw:eip

[Patch] https://github.com/python/cpython/commit/a76e4cd62dd68e7cbe86e37e6ed988495a646b66

[Patch] https://github.com/python/cpython/commit/e9970f077240c7c670e8a6fc6662f2b30d3b6ad0

[Patch] https://github.com/python/cpython/commit/f738386838021c762efea6c9802c82de65e87796

[Issue Tracking] https://github.com/python/cpython/issues/143935

[Issue Tracking] https://github.com/python/cpython/pull/143936

Scores

EPSS 0.0004

EPSS Percentile 13.4%

Classification

CWE

CWE-93

Status draft

Timeline

Published Jan 20, 2026

Tracked Since Feb 18, 2026