Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker vulnerabilities

The Quiz and Survey Master (QSM) plugin for WordPress up to version 11.1.4 is vulnerable to authorization bypass. Authenticated attackers with contributor-level access or higher can modify quizzes they do not own, overwrite result pages, and redirect notification emails to attacker-controlled addresses.

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to authorization bypass in all versions up to and including 11.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action, allowing authenticated attackers with contributor-level access and above to create, modify, and delete quiz output templates in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to unauthorized data loss due to a missing capability check on the qsm_dashboard_delete_result function. This affects all versions up to and including 10.3.1.