[ CVE-2026-82849 · Published 24 Sep 2026 ]
Vulnerability in Unknown Masteriyo LMS
CVSS 4.3
EPSS <1%No fix listed yet
[ Description ]Official description
The Masteriyo LMS WordPress plugin before 3.4.2 does not verify that the user making the request owns the course-progress records being returned, allowing any authenticated user, such as a self-registered subscriber, to read another user's learning activity. The ownership check it applies is skipped whenever the requested account is not named with a non-zero value, in which case the records of every learner on the site are returned at once.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.