CVE-2026-63240 — MEDIUM (4.3)

Vulnerability 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.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-200

References

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

FAQ

What is CVE-2026-63240?

CVE-2026-63240 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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, c...

How severe is CVE-2026-63240?

CVE-2026-63240 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-63240?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.