Update the WordPress WP Page Builder plugin to the latest available version (at least 1.2.7).
thiennv discovered and reported this Cross Site Scripting (XSS) vulnerability in WordPress WP Page Builder Plugin. This could allow a malicious actor to inject malicious scripts, such as redirects, advertisements, and other HTML payloads into your website which will be executed when guests visit your site. This vulnerability has been fixed in version 1.2.7.
Auth. Stored CrossSite Scripting (XSS) vulnerability
Insecure Default Configuration vulnerability
Multiple Stored CrossSite Scripting (XSS) vulnerabilities