The Advanced File Manager plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'fmalocalfilesystem' function in versions 5.2.12 to 5.2.13. This makes it possible for authenticated attackers, with Subscriber-level access and above and upload permissions granted by an administrator, to upload arbitrary files on the affected site's server which may make remote code execution possible. The function can be exploited only if the "Display .htaccess?" setting is enabled.

The Advanced File Manager WordPress plugin before 5.1.1 does not adequately authorize its usage on multisite installations, allowing site admin users to list and read arbitrary files and folders on the server.

The File Manager Advanced Shortcode WordPress plugin through 2.3.2 does not adequately prevent uploading files with disallowed MIME types when using the shortcode. This leads to RCE in cases where the allowed MIME type list does not include PHP files. In the worst case, this is available to unauthenticated users.