phpMyFAQ before 4.1.2 contains a path traversal vulnerability in Client::deleteClientFolder that allows admins with INSTANCE_DELETE permission to delete arbitrary directories. Attackers can submit traversal sequences like https://../../../<path> in the client URL parameter to recursively delete directories outside the intended clientFolder scope.
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-gh9p-q46p-57g2