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

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

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

Ciclo de vida

21 jan 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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

Produtos afetados

GetSimple CMS · My SMTP Contact Plugin

Referências

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