Vulnerability in Three Learning Koollab Lms
CVE-2026-63237
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 unauthor…
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Three Learning Koollab Lms — versions 5.3.2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-63237?
- CVE-2026-63237 is a medium-severity vulnerability in Three Learning Koollab Lms, classified under Improper Verification of Cryptographic Signature. CVSS score: 4.8/10. Published 2026-07-29.
- How severe is CVE-2026-63237?
- Medium severity. CVSS v3 base score is 4.8 out of 10.