Vulnerability · Published Jan 6, 2026 · Assigned by Wordfence
CVE-2025-13766MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.6 Missing Authorization to Authenticated (Subscriber+) Posts and Media Creation, Modification and Deletion
Medium 5.4
In plain English
A medium-severity missing authorization in MasterStudy LMS WordPress Plugin – for Online Courses and Education from stylemix. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Official 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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| stylemix | MasterStudy LMS WordPress Plugin – for Online Courses and Education | 0 – through 3.7.6 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N