CVE-2025-15367
POP3 command injection in user-controlled commands
- State
- Published
- Severity
- 5.9 Medium
- Published
- Jan 20, 2026
- Updated
- Feb 26, 2026
- Reserved
- Dec 30, 2025
Description
The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.9 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N | PSF |
Weaknesses
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Products
| Product | Versions |
|---|---|
CPythonPython Software Foundation |
|
References
- https://github.com/python/cpython/pull/143924patch
- https://github.com/python/cpython/issues/143923issue-tracking
- https://mail.python.org/archives/list/security-announce@python.org/thread/CBFBOWVGGUJFSGITQCCBZS4GEYYZ7ZNE/vendor-advisory
- https://github.com/python/cpython/commit/b234a2b67539f787e191d2ef19a7cbdce32874e7patch
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.