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CVE-2021-47732— CMSimple 5.2 Stored Cross-Site Scripting via Filebrowser External Input

Quick assessment

Affected
CMSimple CMSimple
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.

CMSimple是CMSimple开源的一种自由的内容管理系统。 CMSimple 5.2版本存在跨站脚本漏洞，该漏洞源于Filebrowser External输入字段过滤不足，可能导致存储型跨站脚本攻击。

CVSS 6.1 · Medium EPSS 0.27% · P19
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I. Basic Information for CVE-2021-47732

Vulnerability Information
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Vulnerability Title
CMSimple 5.2 Stored Cross-Site Scripting via Filebrowser External Input
Source: CVE Program / CVE List V5
Vulnerability Description
CMSimple 5.2 contains a stored cross-site scripting vulnerability in the Filebrowser External input field that allows attackers to inject malicious JavaScript. Attackers can place unfiltered JavaScript code that executes when users click on Page or Files tabs, enabling persistent script injection.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
CMSimple 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CMSimple是CMSimple开源的一种自由的内容管理系统。 CMSimple 5.2版本存在跨站脚本漏洞，该漏洞源于Filebrowser External输入字段过滤不足，可能导致存储型跨站脚本攻击。
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
CMSimple CMSimple CMSimple 5.2 -

II. Public POCs for CVE-2021-47732

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III. Intelligence Information for CVE-2021-47732

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Same Patch Batch · CMSimple · 2025-12-23 · 4 CVEs total

CVE-2021-47735 8.8 HIGH CMSimple 5.4 Authenticated Remote Code Execution via Template Editing
CVE-2021-47734 7.8 HIGH CMSimple 5.4 Authenticated Local File Inclusion Remote Code Execution
CVE-2021-47733 6.1 MEDIUM CMSimple 5.4 Cross-Site Scripting via HTML Unicode Encoding

IV. Related Vulnerabilities

Same product: CMSimple
Same vendor: CMSimple
Same weakness: CWE-79

V. Comments for CVE-2021-47732

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