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CVE

CWE

Training

CVE-2025-43920

Published: Apr 20, 2025

Modified: Apr 28, 2025

PUBLISHED

CVSS v3.1

5.4

MEDIUM

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.

Vendor	Product	Versions
GNU	Mailman	affected `2.1.39`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

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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