The FooGallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'customattributekey' shortcode parameter in versions up to, and including, 3.1.31 This is due to an incomplete JavaScript event handler blacklist in the foogallerysanitizejavascript() function, which blocks only a subset of HTML event attributes (onmouseover, onmouseout, onpointerenter, onclick, onload, onchange, onerror) while permitting others such as 'onmouseenter', combined with the failure to escape the attribute key when building the gallery container HTML in foogallerybuildcontainerattributessafe(). 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 FooGallery – Responsive Photo Gallery, Image Viewer, Justified, Masonry & Carousel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the data-caption-title & data-caption-description HTML attributes in all versions up to, and including, 2.4.31 due to insufficient input sanitization and output escaping. 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 FooGallery – Responsive Photo Gallery, Image Viewer, Justified, Masonry & Carousel plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.4.29 via the foogalleryattachmentmodalsave AJAX action due to missing validation on a user controlled key (imgid). This makes it possible for authenticated attackers, with granted access and above, to update arbitrary post and page content. This requires the Gallery Creator Role setting to be a value lower than 'Editor' for there to be any real impact.

The FooGallery – Responsive Photo Gallery, Image Viewer, Justified, Masonry & Carousel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the defaultgallerytitlesize parameter in all versions up to, and including, 2.4.29 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with granted gallery and album creator roles, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

FooGallery – Responsive Photo Gallery, Image Viewer, Justified, Masonry and Carousel 2.4.29 was found to be vulnerable. The web application dynamically generates web content without validating the source of the potentially untrusted data in myapp/extensions/albums/admin/class-meta boxes.php.

The Best WordPress Gallery Plugin – FooGallery plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.4.26. This makes it possible for authenticated attackers, with contributor level or higher to read the contents of arbitrary folders on the server, which can contain sensitive information such as folder structure.

The Best WordPress Gallery Plugin – FooGallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the foogalleryattachmentmodalsave action in all versions up to, and including, 2.4.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The FooGallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image attachment fields (such as 'Title', 'Alt Text', 'Custom URL', 'Custom Class', and 'Override Type') in all versions up to, and including, 2.4.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Best WordPress Gallery Plugin – FooGallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.4.7 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 unfilteredhtml has been disabled.