EUVD-2026-3608

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...

CVE-2021-47870

CVE-2021-47870 affects GetSimple CMS with the plugin “My SMTP Contact Plugin” v1.1.2. The stored XSS arises because input is sanitized with htmlspecialchars() but can be bypassed by escaped hex bytes, enabling arbitrary client-side code execution in an administrator’s browser when visiting a craf...

PT-2026-3822

Name of the Vulnerable Software and Affected Versions GetSimple CMS My SMTP Contact Plugin version 1.1.2 Description A Stored Cross-Site Scripting XSS issue exists where the plugin fails to properly sanitize user input. Although the htmlspecialchars function is used for sanitization, it can be...