Description
WordPress Plugin Quiz And Survey Master-Best Quiz, Exam and Survey is prone to multiple vulnerabilities, including arbitrary file deletion and arbitrary file upload vulnerabilities. An attacker may leverage these issues to delete arbitrary files or to upload arbitrary code and run it in the context of the webserver process, which may facilitate unauthorized access or privilege escalation. WordPress Plugin Quiz And Survey Master-Best Quiz, Exam and Survey version 7.0.0 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 7.0.1 or latest
References
https://www.youtube.com/watch?v=sC4U-oNW34c
https://plugins.svn.wordpress.org/quiz-master-next/trunk/readme.txt