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.
SeverityMedium
CVSS5.3
Exploit probability42. percentile0.5%
Product
Gnu Mailman
PublishedApr 20, 2025
First seenApr 20, 2025
Weakness typeCWE-863Incorrect authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu mailman | 2.1.1 ≤ v ≤ 2.1.39 | — |
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