Input validation vulnerability in Popup Builder – Create highly converting, mobile friendly marketing popups. 4.1.15

The Popup Builder plugin for WordPress has a security issue which could allow malicious users with administrator-level permission or higher to inject dangerous web scripts into webpages. This would allow them to execute these scripts whenever a user visits the infected page. This vulnerability only affects WordPress installations that are set up for multiple sites or have disabled the unfiltered_html setting.