Description
WordPress Plugin Popup Maker-Popup for opt-ins, lead gen, & more is prone to multiple cross-site scripting vulnerabilities because it fails to properly sanitize user-supplied input. An attacker may leverage these issues to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Popup Maker-Popup for opt-ins, lead gen, & more version 1.16.8 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.16.9 or latest
References
https://sploitus.com/exploit?id=WPEX-ID:2660225A-E4C8-40F2-8C98-775EF2301212
https://sploitus.com/exploit?id=WPEX-ID:8BF8EBE8-1063-492D-A0F9-2F824408D0DF
https://plugins.svn.wordpress.org/popup-maker/trunk/readme.txt