CVE-2026-9233: Expresstech Quiz And Survey Master Qsm – Easy Quiz And Survey Maker

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

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. This makes it possible for authenticated attackers, with contributor-level access and above, to create, modify, and delete quiz output templates stored in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.

Affected products

• Expresstech Quiz And Survey Master Qsm – Easy Quiz And Survey Maker: up to and including 11.1.4

Published 2026-06-27. Last modified 2026-06-29.