CVE-2026-63233
Critical · 9.9CVSS
9.9
EPSS
0.5%
Published
Jul 29, 2026
CISA due date
—
The record
A SQL injection and unsafe deserialisation vulnerability in Koollab LMS allowed an authenticated attacker to inject through the assessment overall answer endpoint, control data passed to unserialize(), write a webshell to a publicly accessible location, and execute arbitrary code on the server.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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