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Status published
Medium
CVE-2025-15366
IMAP command injection in user-controlled commands
Vulnerability Description
The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Omar M. Hasan
References
- 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/
- https://github.com/python/cpython/commit/6262704b134db2a4ba12e85ecfbd968534f28b45
- https://github.com/python/cpython/commit/d0921efb665aff26b378f495e5ff84f7e3fe649d
- https://github.com/python/cpython/commit/f2cd7ef89aa8a0dcbc7283bbd39548b76f2a736a
- https://github.com/python/cpython/commit/298182272a740ce2016aee2f54acbd0bba1944c1
- https://github.com/python/cpython/commit/71926d943c05bde79bd2a866933103541d91b6a2
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Affected Vendor
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View all reports →Affected Software
CPython
Vulnerable Versions:
0
Timeline
Official Publish:
January 20th, 2026
Last Modified:
July 9th, 2026
Added to House:
July 22nd, 2026