CVE-2021-47736

High · 7.2

CVSS

7.2

EPSS

1.1%

Published

Dec 23, 2025

CISA due date

—

The record

CMSimple_XH 1.7.4 contains an authenticated remote code execution vulnerability in the content editing functionality that allows administrative users to upload malicious PHP files. Attackers with valid credentials can exploit the CSRF token mechanism to create a PHP shell file that enables arbitrary command execution on the server.

Affected packages

Ecosystem	Package	Introduced	Fixed