CVE-2026-24421: Phpmyfaq

Medium severity, CVSS 6.5. EPSS: 1.8% chance of exploitation in the next 30 days.

phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.

Affected products

• Phpmyfaq Phpmyfaq: before 4.0.17 (fixed in 4.0.17)

Published 2026-01-24. Last modified 2026-06-17.