Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker: SQL injection
Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker is affected by SQL injection. Exploitation requires an authenticated contributor account. A successful request can alter database queries and expose or modify WordPress data. The published affected range is <= 10.3.5.
- Component
- Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
- Plugin slug
quiz-master-next- Affected
- <= 10.3.5
- Safe version
- See mitigation notes
- Published
- Mar 23, 2026
This CVE was published Mar 23, 2026 and is one of 48 known issues for this plugin.
Update, patch or deactivate.
No fixed release is identified. Update Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker when a release after 10.3.5 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 11.2.4, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Quiz and Survey Master (QSM) plugin for WordPress is vulnerable to SQL Injection via the 'merged_question' parameter in all versions up to, and including, 10.3.5. This is due to insufficient sanitization of user-supplied input before being used in a SQL query. The sanitize_text_field() function applied to the merged_question parameter does not prevent SQL metacharacters like ), OR, AND, and # from being included in the value, which is then directly concatenated into a SQL IN() clause without using $wpdb->prepare() or casting values to integers. This makes it possible for authenticated attackers, with Contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N