CVE-2026-15963: Expresstech Quiz And Survey Master Qsm – Quiz Maker & Survey Maker

Medium severity, CVSS 6.5. 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 generic SQL Injection via 'randon_category' Quiz Option in all versions up to, and including, 11.2.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with custom-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Affected products

• Expresstech Quiz And Survey Master Qsm – Quiz Maker & Survey Maker: up to and including 11.2.1

Published 2026-08-16. Last modified 2026-08-20.