Mailman vulnerabilities

2 known vulnerabilities in Mailman from GNU. 2 are rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 8.1 High severity

  Mailman: Improper Neutralization of Special Elements used in an OS Command

  CVE-2025-43920Apr 20, 2025GNU

  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

• 7.5 High severity

  Mailman: Improper Limitation of a Pathname to a Restricted Directory

  CVE-2025-43919Apr 20, 2025GNUEPSS 1.43%

  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 th