What the vulnerability does
01Description
The qnotsquiz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qnotsquiz_custom_start_text' parameter in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
QNotSquiz versions up to 1.0.0 contain a cross-site scripting (XSS) vulnerability that allows high-privilege users to inject malicious scripts. The vulnerability requires high attack complexity and affects the integrity and confidentiality of data across the application scope. A patch version has not been publicly identified.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and compromise data integrity.
Potential impact on your site
04Site Impact
Administrators with high privileges could be tricked into injecting scripts that affect site data and user sessions.
Conditions required to exploit
05Prerequisites
Attacker must have high-level privileges (admin or equivalent) and network access to the application.
Key dates
06Disclosure timeline
October 24, 2025
CVE published
April 8, 2026
Record updated
