CVE-2021-36567: ThinkPHP

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component League\Flysystem\Cached\Storage\AbstractCache.

Affected products

• ThinkPHP ThinkPHP: version 6.0.8 only

Published 2021-12-06. Last modified 2026-06-17.