CVE-2025-43919

MEDIUM

GNU Mailman < 2.1.39 - Path Traversal

Title source: rule

Description

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.

Exploits (3)

github WORKING POC 1 stars

by JawadPy · pythonpoc

https://github.com/JawadPy/CVE-Exploit-Collection/tree/main/CVE-2025-43919.txt

View Code ZIP pw:eip

nomisec WORKING POC

by cybersecplayground · poc

https://github.com/cybersecplayground/CVE-2025-43919-POC

View Code ZIP pw:eip

nomisec WRITEUP

by 0NYX-MY7H · poc

https://github.com/0NYX-MY7H/CVE-2025-43919

View Code ZIP pw:eip

References (4)

[Various Sources] https://github.com/cpanel/mailman2-python3

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

[Exploit, Mitigation, Third Party Advisory] https://github.com/0NYX-MY7H/CVE-2025-43919

[Mailing List] https://www.openwall.com/lists/oss-security/2025/04/21/6

Scores

CVSS v3 5.8

EPSS 0.0022

EPSS Percentile 44.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Details

CWE

CWE-22 CWE-24

Status published

Products (1)

gnu/mailman 2.1.1 - 2.1.39

Published Apr 20, 2025

Tracked Since Feb 18, 2026