CVE-2026-63242: Three Learning Koollab Lms

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

A business logic vulnerability in Koollab LMS allowed an authenticated learner to set their lesson completion status to completed via the SCORM commit endpoint without viewing the lesson material, compromising training and completion records.

Affected products

• Three Learning Koollab Lms: version 5.3.2 only

Published 2026-07-29. Last modified 2026-07-30.