Description

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.

INFO

Published Date :

2026-01-21T17:32:09.385Z

Last Modified :

2026-04-07T14:06:23.031Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2021-47870 vulnerability.

Vendors Products
Get-simple
  • Getsimplecms
Getsimple-ce
  • Getsimple Cms
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47870.

URL Resource
http://get-simple.info cve-icon cve-icon
https://github.com/GetSimpleCMS/GetSimpleCMS cve-icon cve-icon
https://github.com/boku7/gsSMTP-Csrf2Xss2RCE/ cve-icon cve-icon
https://www.exploit-db.com/exploits/49798 cve-icon cve-icon
https://www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-stored-xss cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact