The Image Photo Gallery Final Tiles Grid WordPress plugin before 3.6.15 does not sanitize or escape gallery configuration values before echoing them into an inline script on every page that embeds the gallery, allowing users with contributor-level access and above to store JavaScript that executes in the browser of anyone who views the gallery, including administrators.

The Image Photo Gallery Final Tiles Grid WordPress plugin before 3.6.14 does not properly verify authorization on several of its gallery and image management actions, checking ownership against a different object than the one being acted on, or omitting the check entirely, allowing any authenticated user with contributor-level access or above to clone, modify and reorder galleries and images belonging to other users and to write Image Photo Gallery Final Tiles Grid WordPress plugin before 3.6.14 metadata onto arbitrary posts they do not own.

The Image Photo Gallery Final Tiles Grid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'FinalTilesGallery' shortcode in all versions up to, and including, 3.6.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Image Photo Gallery Final Tiles Grid WordPress plugin before 3.5.3 does not sanitise and escape the Description field when editing a gallery, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks against other users having access to the gallery dashboard

Multiple XSS vulnerabilities in the Final Tiles Gallery plugin before 3.4.19 for WordPress allow remote attackers to inject arbitrary web script or HTML via the Title (aka imageTitle) or Caption (aka description) field of an image to wp-admin/admin-ajax.php.