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.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The Advanced File Manager Shortcodes plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.4. This makes it possible for attackers with contributor access or higher to read the contents of arbitrary files on the server, which can contain sensitive information.

The Advanced File Manager Shortcodes plugin for WordPress is vulnerable to arbitrary file uploads in all versions up to, and including, 2.5.3. This makes it possible for authenticated attackers with contributor access or above to upload arbitrary files on the affected site's server which may make remote code execution possible.