Vulnerability Monitor

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CVE-2025-43919

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive authentication endpoint) via the username parameter. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.

Published

2025-04-20T01:15:45.233

Last Modified

2025-04-28T14:15:22.137

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.8 (MEDIUM)

Weaknesses

Type: Secondary
CWE-24
Type: Primary
CWE-22

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	mailman	≤ 2.1.39	Yes

References

https://code.launchpad.net/~mailman-coders/mailman/2.1 Product ([email protected])
https://github.com/0NYX-MY7H/CVE-2025-43919 Exploit, Mitigation, Third Party Advisory ([email protected])
https://github.com/cpanel/mailman2-python3 ([email protected])
https://www.openwall.com/lists/oss-security/2025/04/21/6 ([email protected])