CVE-2021-24562: Lifterlms

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

The LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress plugin before 4.21.2 was affected by an IDOR issue, allowing students to see other student answers and grades

Affected products

• Lifterlms Lifterlms: before 4.21.2 (fixed in 4.21.2)

Published 2021-08-23. Last modified 2026-06-17.