What is CVE-2026-63234?

CVE-2026-63234 is a critical-severity vulnerability in Three Learning Koollab Lms, classified under SQL Injection. CVSS score: 9.9/10. Published 2026-07-29.

How severe is CVE-2026-63234?

Critical severity. CVSS v3 base score is 9.9 out of 10.

SQL Injection in Three Learning Koollab Lms

CVE-2026-63234

A SQL injection and unsafe deserialisation vulnerability in Koollab LMS allowed an authenticated attacker to inject through the manual mark assessment endpoint, control data passed to unserialize(), write a webshell to a publicly accessibl…

Vulnerability class: SQL Injection

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Three Learning Koollab Lms — versions 5.3.2

Weakness classification (CWE)

CWE-89 — SQL Injection

References

5f57b9bf-260d-4433-bf07-b6a79e9bb7d4

Frequently asked questions

What is CVE-2026-63234?: CVE-2026-63234 is a critical-severity vulnerability in Three Learning Koollab Lms, classified under SQL Injection. CVSS score: 9.9/10. Published 2026-07-29.
How severe is CVE-2026-63234?: Critical severity. CVSS v3 base score is 9.9 out of 10.