The WordPress File Upload plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.25.2. This is due to missing or incorrect nonce validation on the 'wfu_file_details' function. This makes it possible for unauthenticated attackers to modify user data details associated with uploaded files via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
The WordPress File Upload plugin for WordPress is vulnerable to Remote Code Execution, Arbitrary File Read, and Arbitrary File Deletion in all versions up to, and including, 4.24.15 via the 'wfu_file_downloader.php' file. This is due to lack of proper sanitization of the 'source' parameter and allowing a user-defined directory path. This makes it possible for unauthenticated attackers to execute code on the server.
The WordPress File Upload plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'wfu_ajax_action_read_subfolders' function in all versions up to, and including, 4.24.15. This makes it possible for authenticated attackers, with Subscriber-level access and above, to perform limited path traversal to view directories and subdirectories in WordPress. Files cannot be viewed.