Update the WordPress Popup Builder plugin to the latest available version (at least 4.1.1).
Vlad Vector discovered and reported this Cross Site Request Forgery (CSRF) vulnerability in WordPress Popup Builder Plugin. This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. For example a password change which will then allow the malicious actor to login into the admin account. This vulnerability has been fixed in version 4.1.1.
CrossSite Request Forgery (CSRF) leading to plugin settings update
Authenticated Stored CrossSite Scripting (XSS) vulnerability
SQL Injection (SQLi) vulnerability to Reflected CrossSite Scripting (XSS)
Local File Inclusion (LFI) leading to Remote Code Execution (RCE)
SQL Injection (SQLi) vulnerability