CVE-2026-81198: CWE-639 Authorization Bypass Through User-Controlled Key in MasterStudy LMS WordPress Plugin
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.
CVSS v3.1
Score 3.8low
Affected software
MasterStudy LMS WordPress Plugin
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The MasterStudy LMS WordPress Plugin versions prior to 3.7.46 do not properly verify ownership of curriculum objects before permitting actions on them. This flaw enables authenticated users with the instructor role to bypass authorization controls and delete or modify curriculum sections and materials belonging to courses owned by other instructors. The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key).
Potential Impact
An authenticated instructor can modify or delete curriculum content of other instructors' courses, potentially disrupting course content integrity and availability. The CVSS score is 3.8 (low severity), indicating limited impact primarily affecting integrity and availability with no confidentiality impact.
Mitigation Recommendations
No official patch or remediation level has been confirmed yet. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict instructor role permissions where possible and monitor for unauthorized curriculum modifications.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-26T16:31:36.115Z
- State
- PUBLISHED
Threat ID: 6a97bd37acd9273b49d9bc49
Added to database: 09/02/2026, 06:07:51 UTC
Last enriched: 09/07/2026, 14:07:18 UTC
Last updated: 10/15/2026, 18:48:24 UTC
Views: 58
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