What the vulnerability does
01Description
The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the qsm_dashboard_delete_result function in all versions up to, and including, 10.3.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete quiz results.
Explanation of Vulnerability in Simple Terms
02Summary
Quiz and Survey Master versions up to 10.3.1 contain an improper access control vulnerability that allows authenticated users to modify quiz or survey data they should not have permission to change. The vulnerability requires a valid user account but no special privileges. An attacker with low-level access can alter quiz content, answers, or settings through direct requests.
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 integrity compromised; attackers with basic accounts can alter quiz content, answers, or scoring affecting site credibility and user trust.
Conditions required to exploit
05Prerequisites
Attacker must have a valid user account with low-level privileges; no user interaction required.
Key dates
06Disclosure timeline
January 6, 2026
CVE published
April 8, 2026
Record updated