CVE-2026-82849: Unknown Masteriyo Lms

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Unknown Masteriyo Lms: before 3.4.2 (fixed in 3.4.2)

Published 2026-09-24. Last modified 2026-09-24.