The All-in-One Video Gallery – Video Player & Galleries for YouTube, Vimeo & Self-Hosted Videos plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'customfields[embedcode]' parameter in all versions up to, and including, 4.9.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The sanitization bypass is possible because the savemetadata() handler returns early when $POST['posttype'] is absent — a condition always true during XML-RPC requests — and the plugin unconditionally grants Subscribers the publishaiovgvideos capability, making this exploitable by any authenticated user via a single wp.newPost XML-RPC call.

The All-in-One Video Gallery plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 3.6.5 via the aiovgsearchform shortcode. This makes it possible for authenticated attackers, with contributor-level access and above, to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.

The All-in-One Video Gallery plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the aiovgcreateattachmentfromexternalimageurl function in all versions up to, and including, 3.6.4. This makes it possible for authenticated attackers, with contributor access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.