CVE-2021-47870

GetSimple CMS My SMTP Contact Plugin 1.1.2 - Stored XSS

CVSS 4.8 MEDIUMEPSS 0.2%CWE-79

Vexday Risk Score

13Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 4.8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

21 ene 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Productos afectados

GetSimple CMS · My SMTP Contact Plugin

Referencias

http://get-simple.info https://github.com/boku7/gsSMTP-Csrf2Xss2RCE/https://github.com/GetSimpleCMS/GetSimpleCMS https://www.exploit-db.com/exploits/49798 https://www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-stored-xss