What’s Vulnerable › Vulnerabilities

CVE-2021-47736: CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-23 · updated 2026-06-17
• Weakness: CWE-94

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.

Affected products

• Cmsimple-Xh CMSimple_XH: 1.7.4

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

Get alerted when CVE-2021-47736 or the next vulnerability affects your stack