CVE-2025-11468

MEDIUM EPSS 41.8%
Published Jan 20, 20265mo ago · Modified Jun 17, 20262w ago
5.7 CVSS 4.0
Medium
Find Similar
Published Jan 20, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.7
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
41.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-93

References 9

  • github.com https://github.com/python/cpython/commit/003b8315669b9f08b1010a49071f73f15f818094
  • github.com https://github.com/python/cpython/commit/17d1490aa97bd6b98a42b1a9b324ead84e7fd8a2
  • github.com https://github.com/python/cpython/commit/61614a5e5056e4f61ced65008d4576f3df34acb6
  • github.com https://github.com/python/cpython/commit/a76e4cd62dd68e7cbe86e37e6ed988495a646b66
  • github.com https://github.com/python/cpython/commit/e9970f077240c7c670e8a6fc6662f2b30d3b6ad0
  • github.com https://github.com/python/cpython/commit/f738386838021c762efea6c9802c82de65e87796
  • github.com https://github.com/python/cpython/issues/143935
  • github.com https://github.com/python/cpython/pull/143936
  • mail.python.org https://mail.python.org/archives/list/security-announce@python.org/thread/FELSEOLBI2QR6YLG6Q7VYF7FWSGQTKLI/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.