Masteriyo LMS permits unauthenticated deletion of student course progress
Masteriyo LMS through 2.2.0 omits a capability check in CourseProgressItemsController::delete_item_permissions_check(). An unauthenticated request can therefore delete arbitrary course-progress records belonging to any student.
- Component
- Masteriyo LMS – LMS Course Builder, Quizzes & Certificates
- Plugin slug
learning-management-system- Affected
- <= 2.2.0
- Safe version
- See mitigation notes
- Published
- Sep 07, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Sep 07, 2026 and is one of 19 known issues for this plugin.
Update, patch or deactivate.
Masteriyo LMS 3.4.0 is available and its official changelog mentions enhanced security for unauthorized course-progress access, but it does not specifically confirm this deletion flaw. Update conservatively, obtain vendor confirmation, and review student progress records for unexplained deletion.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
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 Masteriyo LMS plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the 'delete_item_permissions_check' function in the CourseProgressItemsController in all versions up to, and including, 2.2.0. This makes it possible for unauthenticated attackers to delete arbitrary course progress records belonging to any student.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N