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Vulnerability record · CVE-2021-47736 · published 23 December 2025

CVE-2021-47736: Cmsimple-xh cmsimple xh code injection vulnerability

Cmsimple Xh · Cmsimple Xh

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.

8.6 CVSS 4.0 High EPSS 1.1% · top 36.4% CWE-94 · Code injection
8.6CVSS 4.0 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.cmsimple-xh.org/ Product
https://www.exploit-db.com/exploits/50367 ExploitThird Party AdvisoryVDB Entry
https://www.vulncheck.com/advisories/cmsimplexh-authenticated-remote-code-execution-via-content-editing Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-47736), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.