CVE-2026-63234
CRITICAL
NVD
CVSS Score
9.9
Severity
CRITICAL
Published
Jul 29, 2026
Vendor
unknown
Description
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 accessible location, and execute arbitrary code on the server.