Multiple plugins for WordPress are vulnerable to Stored Cross-Site Scripting via the plugin's bundled FancyBox JavaScript library (versions 1.3.4 to 3.5.7) in various versions 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 Visual Portfolio, Photo Gallery & Post Grid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘title_tag’ parameter in all versions up to, and including, 3.3.2 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 Visual Portfolio, Photo Gallery & Post Grid WordPress plugin before 2.19.0 does not have proper authorisation checks in some of its REST endpoints, allowing users with a role as low as contributor to call them and inject arbitrary CSS in arbitrary saved layouts

The Visual Portfolio, Photo Gallery & Post Grid WordPress plugin before 2.18.0 does not have proper authorisation checks in some of its REST endpoints, allowing unauthenticated users to call them and inject arbitrary CSS in arbitrary saved layouts