The WP Video Lightbox WordPress plugin before 1.9.7 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admin.
The WP Video Lightbox WordPress plugin before 1.9.5 does not escape the $_SERVER['REQUEST_URI'] parameter before outputting it back in an attribute, which could lead to Reflected Cross-Site Scripting in old web browsers
The WP Video Lightbox WordPress plugin before 1.9.3 does not escape the attributes of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks