Description
WordPress Plugin WP Popup Builder-Popup Forms, Marketing PoPuP & Newsletter is prone to multiple vulnerabilities, including cross-site scripting and security bypass vulnerabilities. Exploiting these issues may allow an attacker to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site, to steal cookie-based authentication credentials, or to perform otherwise restricted actions and subsequently delete arbitrary popup. WordPress Plugin WP Popup Builder-Popup Forms, Marketing PoPuP & Newsletter version 1.2.8 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.3.0 or latest
References
https://sploitus.com/exploit?id=WPEX-ID:0D889DDE-B9D5-46CF-87D3-4F8A85CF9B98
https://sploitus.com/exploit?id=WPEX-ID:50037028-2790-47EE-AAE1-FAF0724EB917
https://plugins.svn.wordpress.org/wp-popup-builder/trunk/readme.txt