CVE-2025-15366

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

Score

CVSS 4.0 5.9 Medium

Status

Deferred - cna@python.org

Published

2026-01-20

Last modified

2026-08-06

Weaknesses

CWE-77

Affected products

• Cpython (Python Software Foundation)

References

• https://github.com/python/cpython/commit/298182272a740ce2016aee2f54acbd0bba1944c1
• https://github.com/python/cpython/commit/6262704b134db2a4ba12e85ecfbd968534f28b45
• https://github.com/python/cpython/commit/71926d943c05bde79bd2a866933103541d91b6a2
• https://github.com/python/cpython/commit/d0921efb665aff26b378f495e5ff84f7e3fe649d
• https://github.com/python/cpython/commit/f2cd7ef89aa8a0dcbc7283bbd39548b76f2a736a
• https://github.com/python/cpython/issues/143921
• https://github.com/python/cpython/pull/143922
• https://mail.python.org/archives/list/security-announce@python.org/thread/DD7C7JZJYTBXMDOWKCEIEBJLBRU64OMR/