CVE-2026-9233
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
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, allowing authenticated attackers with contributor-level access and above to create, modify, and delete quiz output templates in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.
Risk Assessment
The organization faces risks of account takeover, data theft, or injection of malicious JavaScript (XSS) through unauthorized modifications of quiz output templates, potentially leading to data integrity and confidentiality breaches.
Recommendation
Immediately update the Quiz and Survey Master plugin to version 11.1.5 or later, which includes a fix for the authorization bypass vulnerability.
Other vulnerabilities in Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
See all- CVE-2026-9230Medium
The Quiz and Survey Master (QSM) plugin for WordPress up to version 11.1.4 is vulnerable to authorization bypass. Authenticated attackers with contributor-level access or higher can modify quizzes they do not own, overwrite result pages, and redirect notification emails to attacker-controlled addresses.
- CVE-2025-9294Medium
The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to unauthorized data loss due to a missing capability check on the qsm_dashboard_delete_result function. This affects all versions up to and including 10.3.1.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS