CVE-2021-47736

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.

Score

CVSS 4.0 8.6 High

Status

Modified - disclosure@vulncheck.com

Published

2025-12-23

Last modified

2026-07-15

Weaknesses

CWE-94

Affected products

• Cmsimple Xh (Cmsimple-xh)

References

• https://www.cmsimple-xh.org/
• https://www.exploit-db.com/exploits/50367
• https://www.vulncheck.com/advisories/cmsimplexh-authenticated-remote-code-execution-via-content-editing