Input validation vulnerability in WP Super Popup 1.1.2

The WP Super Popup plugin for WordPress is not secure in versions up to and including 1.1.2. This means that attackers with administrator-level permission or higher can insert malicious code into pages on the website. This malicious code will then execute itself whenever someone visits the page. This security risk only impacts multi-site installations and those where a certain type of HTML has been disabled.