CVE-2026-5333: Defaultfuction Content Management System

Critical severity, CVSS 9.8. EPSS: 3.6% chance of exploitation in the next 30 days.

A security flaw has been discovered in DefaultFuction Content-Management-System 1.0. This issue affects some unknown processing of the file /admin/tools.php. The manipulation of the argument host results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Defaultfuction Content Management System: version 1.0 only

Published 2026-04-02. Last modified 2026-06-17.