CVE-2026-13767
Received Received - Intake

SQL Injection in Quiz Master Next WordPress Plugin

Publication date: 2026-07-16

Last updated on: 2026-07-16

Assigner: Wordfence

Description
The Quiz Master Next plugin for WordPress is vulnerable to SQL Injection via stored quiz page data in versions up to, and including, 11.2.0. This is due to insufficient escaping on the user-supplied 'pages' parameter persisted by the qsm_ajax_save_pages() AJAX handler (sanitize_text_field only) and lack of sufficient preparation on the existing SQL query built in qsm_options_questions_tab_content() at line 143, where the stored page IDs are interpolated into an IN() clause via implode() with no $wpdb->prepare() and no integer casting. This makes it possible for authenticated attackers, with Author-level access and above (who can own a quiz they are entitled to edit), to plant a SQL payload that is executed second-order whenever any user (including an administrator) views the quiz's Questions tab, allowing them to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

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Meta Information

Published
2026-07-16
Last Modified
2026-07-16
Generated
2026-07-16
AI Q&A
2026-07-16
EPSS Evaluated
N/A
NVD
CVE-2026-13767
EUVD
EUVD-2026-44885

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
quiz_master_next plugin to 11.2.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

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Executive Summary

This is a second-order SQL injection vulnerability in the Quiz Master Next WordPress plugin. It occurs due to improper escaping of user input in the 'pages' parameter and lack of SQL query preparation. Authenticated attackers with Author-level access can inject malicious SQL payloads that execute when an administrator views the quiz's Questions tab.

Detection Guidance

To detect this vulnerability, check for the Quiz Master Next plugin version 11.2.0 or lower. Inspect WordPress sites for unauthorized SQL queries or suspicious activity in quiz page data. Review database logs for unusual queries involving the 'pages' parameter.

Impact Analysis

An attacker could extract sensitive database information, such as user credentials, personal data, or other confidential details. Since the payload executes when an admin views the quiz, it could lead to complete database compromise without requiring direct admin access.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Organizations may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Immediately update the Quiz Master Next plugin to the latest version. Remove Author-level access for users who do not need it. Monitor database queries for signs of exploitation and review stored quiz page data for malicious payloads.

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