CVE-2026-63240

MEDIUM

Three Learning Koollab Lms < 5.3.2 - Information Disclosure

Title source: rule

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.

References (1)

Core 1

Core References

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/

Scores

CVSS v3 4.3

EPSS 0.0018

EPSS Percentile 7.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-200

Status published

Products (1)

Three Learning/Koollab LMS 5.3.2

Published Jul 29, 2026

Tracked Since Jul 29, 2026