CVE-2021-47870

CVSS

No CVSS.

G

etSimple 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.

References

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

Configurations

No configuration.

History

21 Jan 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-21 18:16

Updated : 2026-01-26 15:04

NVD link : CVE-2021-47870

Mitre link : CVE-2021-47870

CVE.ORG link : CVE-2021-47870

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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