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CVE-2026-63237

4.8 · MEDIUM

A TOTP two-factor authentication bypass vulnerability in Koollab LMS allowed an attacker to supply a client-controlled seed to generate a matching one-time password and bypass the second authentica…

Published Jul 29, 2026CWE-347EPSS 0.18%

Overview

CVE-2026-63237 is a medium-severity vulnerability. It was published on July 29, 2026 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A TOTP two-factor authentication bypass vulnerability in

Koollab LMS allowed an

attacker to supply a client-controlled seed to generate a matching one-time

password and bypass the second authentication factor, potentially enabling

unauthorised access to administrator accounts.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63237?

CVE-2026-63237 is a medium-severity vulnerability. It was published on July 29, 2026 and has a CVSS 3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2026-63237?

This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-63237?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-63237?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63237 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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