XSS in Get-simple Getsimplecms
CVE-2021-47870
GetSimple CMS My SMTP Contact Plugin 1.1.2 suffers from a Stored Cross-Site Scripting (XSS) vulnerability. The plugin attempts to sanitize user input using htmlspecialchars(), but this can be bypassed by passing dangerous characters as esc…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (13.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Get-simple Getsimplecms — versions 1.1.2
- Getsimple Cms My Smtp Contact Plugin — versions 1.1.2
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, technical-description, Third Party Advisory, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Exploit, VDB Entry, Third Party Advisory, exploit)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47870?
- CVE-2021-47870 is a medium-severity vulnerability in Get-simple Getsimplecms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-21.
- How severe is CVE-2021-47870?
- Medium severity. CVSS v3 base score is 5.4 out of 10.