What the vulnerability does
01Description
The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 11.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create, modify, and delete quiz output templates stored in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.
Explanation of Vulnerability in Simple Terms
02Summary
Quiz and Survey Master (QSM) versions up to 11.1.4 lack proper authorization checks, allowing authenticated users with low privileges to modify quiz or survey data they should not have access to. An attacker with a basic user account can alter quiz content, results, or settings without permission. This affects the integrity of quiz data but does not expose sensitive information or cause service disruption.
What an attacker can do
03Attacker Capabilities
Modify quiz or survey data belonging to other users or administrators without authorization.
Potential impact on your site
04Site Impact
Quiz and survey content can be altered by unauthorized users, compromising data integrity and user trust.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site; no user interaction required.
Key dates
06Disclosure timeline
June 27, 2026
CVE published
June 29, 2026
Record updated
