The Bit File Manager – 100% Free & Open Source File Manager and Code Editor for WordPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload' function in all versions up to, and including, 6.5.5. This makes it possible for authenticated attackers, with Subscriber-level access and above, and granted upload permissions by an administrator, to upload arbitrary files on the affected site's server which may make remote code execution possible.