YourChannel: Everything you want in a YouTube plugin < 1.2.3 - Contributor+ Stored XSS via Shortcode

The YourChannel: Everything you want in a YouTube plugin WordPress plugin before 1.2.3 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 admins.