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.
History

Tue, 24 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 24 Mar 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Expresstech
Expresstech quiz And Survey Master (qsm) – Easy Quiz And Survey Maker
Wordpress
Wordpress wordpress
Vendors & Products Expresstech
Expresstech quiz And Survey Master (qsm) – Easy Quiz And Survey Maker
Wordpress
Wordpress wordpress

Tue, 24 Mar 2026 02:30:00 +0000

Type Values Removed Values Added
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.
Title Quiz and Survey Master (QSM) <= 10.3.5 - Authenticated (Contributor+) SQL Injection via 'merged_question' Parameter
Weaknesses CWE-89
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-03-24T18:44:44.723Z

Reserved: 2026-02-12T16:12:41.339Z

Link: CVE-2026-2412

cve-icon Vulnrichment

Updated: 2026-03-24T18:44:41.538Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-23T23:17:11.287

Modified: 2026-03-24T15:53:48.067

Link: CVE-2026-2412

cve-icon Redhat

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