Improper input validation vulnerability in WordPress Quiz Maker Plugin prior to 6.5.0.6 allows a remote authenticated attacker to perform a Denial of Service (DoS) attack against external services.
The Quiz Maker WordPress plugin before 6.4.9.5 does not adequately authorize the `ays_quiz_author_user_search` AJAX action, allowing an unauthenticated attacker to perform a search for users of the system, ultimately leaking user email addresses.
The Quiz Maker WordPress plugin before 6.4.9.5 does not escape generated URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting