CVE-2021-47870 — GetSimple CMS My SMTP Contact Plugin 1.1.2 - Stored XSS
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(), b…
Published: 2026-01-21 · CVSS: 4.8 · CVSS 4.0
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 escaped hex bytes. This allows attackers to inject arbitrary client-side code that executes in the administrator's browser when visiting a malicious page.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7