CVE-2021-47736
7.2 · HIGHOverview
CVE-2021-47736 is a high-severity vulnerability affecting cmsimple-xh cmsimple_xh. It was published on December 23, 2025 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from cmsimple-xh. Update cmsimple_xh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2021-47736?
CVE-2021-47736 is a high-severity vulnerability affecting cmsimple-xh cmsimple_xh. It was published on December 23, 2025 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-47736?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-47736?
Check the references section for vendor advisories and patches from cmsimple-xh. Update cmsimple_xh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-47736?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-47736 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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