WordPress Filter Gallery Plugin <= 0.1.5 - Authenticated (Administrator+) Stored Cross-Site Scripting

The WordPress Filter Gallery Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ufg_gallery_filters AJAX action in versions up to, and including, 0.1.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.