CVE-2026-2412
Quiz and Survey Master (QSM) <= 10.3.5 - Authenticated (Contributor+) SQL Injection via 'merged_question' Parameter
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.
| CWE | CWE-89 |
| Vendor | expresstech |
| Product | quiz and survey master (qsm) – easy quiz and survey maker |
| Published | Mar 23, 2026 |
| Last Updated | Apr 8, 2026 |
Get instant alerts for expresstech quiz and survey master (qsm) – easy quiz and survey maker
Be the first to know when new medium vulnerabilities affecting expresstech quiz and survey master (qsm) – easy quiz and survey maker are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N