CVE-2026-63240

Severity CVSS v4.0:

Pending analysis

Type:

CWE-200 Information Leak / Disclosure

Publication date:

29/07/2026

Last modified:

30/07/2026

Description

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

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

4.30

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

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