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Medium · 4.3 CVE-2026-63240 EUVD-2026-50135GHSA-9ch9-66pf-cjcf

Information disclosure vulnerability

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

Description

An information disclosure vulnerability in Koollab LMS allowed an authenticated learner
to obtain correct quiz answers from the course status endpoint without
completing the assessment legitimately, compromising the integrity of
assessments.

Affected products

VendorProductAffectedFixed
Three Learning Koollab LMS 5.3.2 —

References