CVE-2025-43921

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.

References

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

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

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

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

Details

Source: Mitre, NVD

Published: 2025-04-20

Updated: 2025-04-28

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00052