CVE-2026-81198
Deferred Deferred - Pending Action

Authenticated Curriculum Manipulation in MasterStudy LMS WordPress Plugin

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: WPScan

Description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not properly verify ownership of a curriculum object before acting on it, allowing authenticated users with the instructor role to delete or modify curriculum sections and materials belonging to courses owned by other instructors.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-22
AI Q&A
2026-09-02
EPSS Evaluated
2026-09-21
NVD
CVE-2026-81198
EUVD
EUVD-2026-69851

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
masterstudy lms to 3.7.46 (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 vulnerability is an Insecure Direct Object Reference (IDOR) flaw in the MasterStudy LMS WordPress plugin before version 3.7.46. It allows authenticated users with the instructor role to delete or modify curriculum sections and materials belonging to courses owned by other instructors without verifying ownership.

Detection Guidance

Check the installed version of the MasterStudy LMS plugin in WordPress. If it is below 3.7.46, the system is vulnerable. Use WordPress admin panel or run a command like 'wp plugin list' in the WordPress directory to verify the version.

Impact Analysis

If you use the MasterStudy LMS plugin with an instructor role, an attacker could delete or alter your course materials. If you are a site administrator, this could lead to unauthorized changes or data loss across multiple courses.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, potentially violating GDPR (data integrity) or HIPAA (protected health information integrity). Compliance may be compromised if unauthorized changes occur to regulated data.

Mitigation Strategies

Update the MasterStudy LMS plugin to version 3.7.46 or later immediately. Ensure only authorized users have the instructor role and review access controls for curriculum sections and materials.

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