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CVE-2021-47919— Simple CMS 2.1 Non-Persistent Cross-Site Scripting via Preview Parameter

Quick assessment

Affected
Simplephpscripts Simple CMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Simple CMS是Simple PHP Scripts开源的一个内容管理系统。 Simple CMS 2.1版本存在跨站脚本漏洞，该漏洞源于preview.php文件的id参数存在跨站脚本漏洞，可能导致执行任意脚本。

CVSS 6.4 · Medium EPSS 0.33% · P24
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I. Basic Information for CVE-2021-47919

Vulnerability Information
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Vulnerability Title
Simple CMS 2.1 Non-Persistent Cross-Site Scripting via Preview Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
Simple CMS 2.1 contains a non-persistent cross-site scripting vulnerability in the preview.php file's id parameter. Attackers can inject malicious script code through a GET request to execute arbitrary scripts and potentially hijack user sessions or perform phishing attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Simple CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Simple CMS是Simple PHP Scripts开源的一个内容管理系统。 Simple CMS 2.1版本存在跨站脚本漏洞，该漏洞源于preview.php文件的id参数存在跨站脚本漏洞，可能导致执行任意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Simplephpscripts Simple CMS 2.1 -

II. Public POCs for CVE-2021-47919

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III. Intelligence Information for CVE-2021-47919

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Same Patch Batch · Simplephpscripts · 2026-02-01 · 3 CVEs total

CVE-2021-47918 8.1 HIGH Simple CMS 2.1 SQL Injection Vulnerability via Users Module
CVE-2021-47917 6.4 MEDIUM Simple CMS 2.1 Persistent Cross-Site Scripting via User Input Parameters

IV. Related Vulnerabilities

Same product: Simple CMS
Same vendor: Simplephpscripts
Same weakness: CWE-79

V. Comments for CVE-2021-47919

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