CVE-2026-63238

Authentication bypass vulnerability

Published Jul 29, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated
attacker to take over any account, including administrator accounts, by
supplying a valid user UUID without providing primary credentials via the 2FA
validation endpoint.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Three Learning
Three Learning koollab Lms
Weaknesses CWE-287
Vendors & Products Three Learning
Three Learning koollab Lms
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated attacker to take over any account, including administrator accounts, by supplying a valid user UUID without providing primary credentials via the 2FA validation endpoint.
Title Authentication bypass vulnerability
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CSA
Published
Updated
Jul 29, 2026, 2:28 PM
Reserved
Jul 16, 2026, 2:35 AM
Status
Deferred
Published
Jul 29, 2026, 7:16 AM
Modified
Oct 23, 2026, 11:10 PM