CVE-2025-13766: CWE-862 Missing Authorization in stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education
The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to unauthorized modification and deletion of data due to a missing capability checks on multiple REST API endpoints in all versions up to, and including, 3.7.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload or delete arbitrary media files, delete or modify posts, and create/manage course templates
AI Analysis
Technical Summary
The MasterStudy LMS WordPress Plugin suffers from missing capability checks on several REST API endpoints, allowing authenticated users with low privileges (Subscriber-level and above) to perform unauthorized actions such as uploading or deleting media files, modifying or deleting posts, and managing course templates. This vulnerability affects all versions up to 3.7.6 and is identified as CWE-862 (Missing Authorization). The CVSS 3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, and low privileges required, with limited confidentiality and integrity impact and no availability impact. No patch or official remediation guidance is currently available.
Potential Impact
An attacker with authenticated access at Subscriber-level or higher can exploit this vulnerability to modify or delete content and media files within the LMS environment, potentially disrupting course content and media integrity. The impact includes unauthorized data modification and deletion, which can affect the confidentiality and integrity of the LMS content. There is no indication of availability impact or remote unauthenticated exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict user roles and permissions to trusted users only and monitor for unusual activity involving media uploads or content modifications. Avoid granting Subscriber-level or higher access to untrusted users. Follow updates from the plugin vendor for any forthcoming patches or official mitigations.
CVE-2025-13766: CWE-862 Missing Authorization in stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education
Description
The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to unauthorized modification and deletion of data due to a missing capability checks on multiple REST API endpoints in all versions up to, and including, 3.7.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload or delete arbitrary media files, delete or modify posts, and create/manage course templates
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The MasterStudy LMS WordPress Plugin suffers from missing capability checks on several REST API endpoints, allowing authenticated users with low privileges (Subscriber-level and above) to perform unauthorized actions such as uploading or deleting media files, modifying or deleting posts, and managing course templates. This vulnerability affects all versions up to 3.7.6 and is identified as CWE-862 (Missing Authorization). The CVSS 3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, and low privileges required, with limited confidentiality and integrity impact and no availability impact. No patch or official remediation guidance is currently available.
Potential Impact
An attacker with authenticated access at Subscriber-level or higher can exploit this vulnerability to modify or delete content and media files within the LMS environment, potentially disrupting course content and media integrity. The impact includes unauthorized data modification and deletion, which can affect the confidentiality and integrity of the LMS content. There is no indication of availability impact or remote unauthenticated exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict user roles and permissions to trusted users only and monitor for unusual activity involving media uploads or content modifications. Avoid granting Subscriber-level or higher access to untrusted users. Follow updates from the plugin vendor for any forthcoming patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-11-27T16:40:43.878Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 695cc9de3839e44175ff5dba
Added to database: 1/6/2026, 8:37:50 AM
Last enriched: 4/9/2026, 9:09:27 PM
Last updated: 5/7/2026, 5:30:47 AM
Views: 124
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