RCE in Cmsimple-Xh Cmsimple Xh
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000
Affected products
- Cmsimple-Xh Cmsimple Xh — versions 1.7.4
Weakness classification (CWE)
References
- ExploitDB-50367 (Exploit, exploit, Third Party Advisory, VDB Entry)
- Official Vendor Homepage (Product, product)
- VulnCheck Advisory: CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47736?
- CVE-2021-47736 is a high-severity vulnerability in Cmsimple-Xh Cmsimple Xh, classified under Code Injection. CVSS score: 7.2/10. Published 2025-12-23.
- How severe is CVE-2021-47736?
- High severity. CVSS v3 base score is 7.2 out of 10.