Frontend File Manager Plugin vulnerabilities

The Frontend File Manager Plugin for WordPress up to version 23.6 lacks nonce validation on one of its file-metadata update actions. This allows a CSRF attack where an attacker can modify the metadata of a logged-in user's uploaded file and then download it. When guest uploads are enabled, the same action is reachable unauthenticated against any user's file.

The Frontend File Manager Plugin for WordPress up to version 23.6 does not validate a file path derived from user input before deleting the referenced file, allowing unauthenticated users to delete arbitrary files on the server (such as wp-config.php) when guest upload mode is enabled. Deleting wp-config.php forces the site into its setup routine, which can be leveraged toward a full site takeover.

The Frontend File Manager Plugin for WordPress up to version 23.6 is vulnerable to authenticated arbitrary file deletion. The issue is a case-sensitive bypass of the wpfm_dir_path parameter sanitization in the wpfm_file_meta_update AJAX handler, allowing an attacker to delete arbitrary files on the server.