VulnerabilityDeferred
CVE-2026-63238
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.
MEDIUM 6.5EPSS 0.22%
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 0.22% probability · 12th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Source
- 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.