Skip to content
OpenAdvisories
Medium · 6.5 CVE-2026-63238 EUVD-2026-50133GHSA-2g2j-fq65-5w72

Authentication bypass vulnerability

Published Jul 29, 2026 · Updated Jul 29, 2026 · Assigned by CSA

Description

An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated
attacker to take over any account, including administrator accounts, by
supplying a valid user UUID without providing primary credentials via the 2FA
validation endpoint.

Affected products

VendorProductAffectedFixed
Three Learning Koollab LMS 5.3.2 —

References