MasterStudy LMS WordPress Plugin: Unauthorized manipulation of course orders
An authenticated Instructor can modify arbitrary orders through the REST interface, enabling free enrolment, revocation of paid access or alteration of order notes. The export does not identify the route or order parameter. Affected versions reported by the CNA: < 3.7.50. The export identifies 3.7.50 as fixed.
- Component
- MasterStudy LMS WordPress Plugin
- Plugin slug
masterstudy-lms-learning-management-system- Affected
- < 3.7.50
- Safe version
3.7.50- Published
- Sep 18, 2026
This CVE was published Sep 18, 2026 and is one of 31 known issues for this plugin.
Update, patch or deactivate.
The authoritative export identifies 3.7.50 as fixed. Update to that release or a later supported version. Authorize each order mutation against the caller's ownership and management capabilities, and enforce permitted payment and enrolment transitions server-side.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform per-object ownership or capability checks when updating orders through its REST API, allowing users with the Instructor role to modify any order on the site, granting free course enrolment, revoking other users' paid enrolments, and tampering with order notes.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L