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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Three Learning Koollab LMS unaffected
Version Status Constraints
5.3.2 affected —

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/ cve-icon
History

Wed, 29 Jul 2026 06:45:00 +0000

Type Values Removed Values Added
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.
Title TOTP two-factor authentication bypass vulnerability
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: CSA

Published:

Updated: 2026-07-29T06:25:52.341Z

Reserved: 2026-07-16T02:35:54.249Z

Link: CVE-2026-63237

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.