Description
WordPress Plugin Quiz And Survey Master-Best Quiz, Exam and Survey is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue 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 Quiz And Survey Master-Best Quiz, Exam and Survey version 6.4.12 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 7.0.0 or latest
References
https://fortiguard.com/zeroday/FG-VD-20-092
https://plugins.svn.wordpress.org/quiz-master-next/trunk/readme.txt
Related Vulnerabilities
WordPress Plugin Contact Form X Cross-Site Scripting (2.4)
WordPress Plugin Print My Blog-Print, PDF, & eBook Converter Cross-Site Request Forgery (3.4.1)
Dotclear Permissions, Privileges, and Access Controls Vulnerability (CVE-2016-7903)
WordPress Plugin WP Prayer Multiple Cross-Site Request Forgery Vulnerabilities (1.6.5)