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Critical · 9.9 CVE-2026-63234 EUVD-2026-50129GHSA-4q7v-f574-m5cv

SQL injection and unsafe deserialisation vulnerability

Published Jul 29, 2026 · Updated Jul 29, 2026 · Assigned by CSA

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.

Affected products

VendorProductAffectedFixed
Three Learning Koollab LMS 5.3.2 —

References