SQL Injection in Expresstech Quiz And Survey Master (Qsm) – Maker &
CVE-2026-15963
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.
Vulnerability class: SQL Injection
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Expresstech Quiz And Survey Master (Qsm) – Maker & — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-15963?
- CVE-2026-15963 is a medium-severity vulnerability in Expresstech Quiz And Survey Master (Qsm) – Maker &, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-08-16.
- How severe is CVE-2026-15963?
- Medium severity. CVSS v3 base score is 6.5 out of 10.