CVE-2026-63237

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

29/07/2026

Last modified:

30/07/2026

Description

A TOTP two-factor authentication bypass vulnerability in<br /> Koollab LMS allowed an<br /> attacker to supply a client-controlled seed to generate a matching one-time<br /> password and bypass the second authentication factor, potentially enabling<br /> unauthorised access to administrator accounts.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x

4.80

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/