CVE-2025-43920

State: Published
Severity: 5.4 Medium
Published: Apr 20, 2025
Updated: Apr 28, 2025
Reserved: Apr 19, 2025

Description

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N	mitre

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
MailmanGNU	2.1.39Affected

References

https://code.launchpad.net/~mailman-coders/mailman/2.1
https://github.com/0NYX-MY7H/CVE-2025-43920
https://github.com/cpanel/mailman2-python3
https://www.openwall.com/lists/oss-security/2025/04/21/6

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