Mailman Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Vulnerability (CVE-2025-43919)
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.