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Medium · 5.8 Public exploit CVE-2025-43919 EUVD-2025-12592GHSA-56r4-vj3r-h3vv

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at…

Published Apr 20, 2025 · Updated Apr 28, 2025 · Assigned by mitre

Vendor: GNU Product: Mailman

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.

Affected products

VendorProductAffectedFixed
GNU Mailman 2.1.39 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 2 repositories

  • cybersecplayground/CVE-2025-43919-POC ★ 1 · Apr 22, 2025

    A new vulnerability has been discovered in GNU Mailman 2.1.39, bundled with cPanel/WHM, allowing unauthenticated remote attackers to read arbitrary files on the server via a directory traversal flaw.

  • 0NYX-MY7H/CVE-2025-43919 ★ 0 · Apr 20, 2025

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References