CVE-2021-39608: Flatcore Flatcore-CMS

High severity, CVSS 7.2. EPSS: 45.9% chance of exploitation in the next 30 days.

Remote Code Execution (RCE) vulnerabilty exists in FlatCore-CMS 2.0.7 via the upload addon plugin, which could let a remote malicious user exeuct arbitrary php code.

Affected products

• Flatcore Flatcore-CMS: version 2.0.7 only

Published 2021-08-23. Last modified 2026-06-17.