Input validation vulnerability in WP GoToWebinar 14.45

The WP GoToWebinar plugin for WordPress is not secure in versions up to 14.45. If someone with administrator-level access and above uses the plugin, they could inject malicious web scripts into pages. This could cause those pages to execute malicious code when someone visits them. This is only a problem in multi-site installations and installations where a security setting called unfiltered_html is disabled.