Input validation vulnerability in WP GoToWebinar 14.45

The WP GoToWebinar plugin for WordPress contains a vulnerability that puts it at risk for a type of attack called Stored Cross-Site Scripting. This kind of vulnerability only affects multi-site installations and installations where certain features have been disabled. This vulnerability could allow attackers with administrator-level permissions to inject malicious code into pages that would execute when any user visits the page. This vulnerability affects versions 14.45 and below of the WP GoToWebinar plugin.