Detections
Analytics

CVE-2025-11468

medium

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

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

https://github.com/python/cpython/pull/143936

https://github.com/python/cpython/issues/143935

https://github.com/python/cpython/commit/f738386838021c762efea6c9802c82de65e87796

https://github.com/python/cpython/commit/e9970f077240c7c670e8a6fc6662f2b30d3b6ad0

https://github.com/python/cpython/commit/61614a5e5056e4f61ced65008d4576f3df34acb6

https://github.com/python/cpython/commit/17d1490aa97bd6b98a42b1a9b324ead84e7fd8a2

Details

Source: Mitre, NVD

Published: 2026-01-20

Updated: 2026-01-26

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 5.7

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00039