CVE-2026-79615
Deferred Deferred - Pending Action

Authentication Bypass in Quiz and Survey Master WordPress Plugin

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: WPScan

Description
The Quiz and Survey Master (QSM) WordPress plugin before 11.2.4 does not check authorisation when returning question bank entries through one of its REST API routes, allowing users with a role as low as Contributor to read the questions, hints and correct answer keys of quizzes belonging to other users.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-09-17
AI Q&A
2026-08-28
EPSS Evaluated
2026-09-15
NVD
CVE-2026-79615
EUVD
EUVD-2026-67572

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
quiz_and_survey_master quiz_and_survey_master to 11.2.4 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This is an Insecure Direct Object Reference (IDOR) vulnerability in the Quiz and Survey Master WordPress plugin before version 11.2.4. It allows users with a Contributor role or higher to access and read question banks, hints, and correct answer keys of quizzes created by other users without proper authorization.

Detection Guidance

To detect this vulnerability, check if the Quiz and Survey Master plugin version is below 11.2.4. Use WordPress admin panel or run commands like 'wp plugin list' in CLI to verify versions. Monitor REST API requests to identify unauthorized access attempts to question bank endpoints.

Impact Analysis

An attacker with a low-privilege role could steal sensitive quiz content, including correct answers and hints, from other users' quizzes. This could lead to unauthorized access to proprietary or confidential information.

Compliance Impact

This vulnerability could potentially violate data protection regulations like GDPR or HIPAA if it leads to unauthorized access to personal or sensitive data stored in quizzes. Organizations may face compliance risks if user data is exposed.

Mitigation Strategies

Immediately update the Quiz and Survey Master plugin to version 11.2.4 or later. Remove or restrict Contributor-level user access if not required. Review audit logs for suspicious API access patterns and apply WordPress hardening measures like limiting user roles.

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