XSS in Cmsimple
CVE-2021-47732
CMSimple 5.2 contains a stored cross-site scripting vulnerability in the Filebrowser External input field that allows attackers to inject malicious JavaScript. Attackers can place unfiltered JavaScript code that executes when users click on Page or Files tabs, enabling persistent script injection.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (15.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Cmsimple — versions CMSimple 5.2, 5.2
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47732?
- CVE-2021-47732 is a medium-severity vulnerability in Cmsimple, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-12-23.
- How severe is CVE-2021-47732?
- Medium severity. CVSS v3 base score is 6.1 out of 10.