CVE-2020-23653: Thinkadmin

Critical severity, CVSS 9.8. EPSS: 4.3% chance of exploitation in the next 30 days.

An insecure unserialize vulnerability was discovered in ThinkAdmin versions 4.x through 6.x in app/admin/controller/api/Update.php and app/wechat/controller/api/Push.php, which may lead to arbitrary remote code execution.

Affected products

• Thinkadmin Thinkadmin: from 4.0, up to and including 6.0

Published 2021-01-13. Last modified 2026-06-17.