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CVE

CWE

Training

CVE-2025-43921

Published: Apr 20, 2025

Modified: Apr 28, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint. 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:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

References

https://code.launchpad.net/~mailman-coders/mailman/2.1

https://github.com/0NYX-MY7H/CVE-2025-43921

https://github.com/cpanel/mailman2-python3

https://www.openwall.com/lists/oss-security/2025/04/21/6

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