CVE-2025-43920
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Gnu Mailman
PublishedApr 20, 2025
First seenApr 20, 2025
Weakness typeCWE-78OS command injection
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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