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CVE-2025-4392— Shared Files <= 1.7.48 - Unauthenticated Stored Cross-Site Scripting via sanitize_file Function

Quick assessment

Affected
anssilaitila Shared Files – Frontend File Upload Form & Secure File Sharing
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Shared Files 1.7.48及之前版本存在跨站脚本漏洞，该漏洞源于html文件上传时sanitize_file函数输入清理和转义不足，可能导致存储型跨站脚本攻击。

CVSS 7.2 · High EPSS 0.34% · P26
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I. Basic Information for CVE-2025-4392

Vulnerability Information
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Vulnerability Title
Shared Files <= 1.7.48 - Unauthenticated Stored Cross-Site Scripting via sanitize_file Function
Source: CVE Program / CVE List V5
Vulnerability Description
The Shared Files – Frontend File Upload Form & Secure File Sharing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via html File uploads in all versions up to, and including, 1.7.48 due to insufficient input sanitization and output escaping within the sanitize_file() function. This makes it possible for unauthenticated attackers to bypass the plugin’s MIME-only checks and inject arbitrary web scripts in pages that will execute whenever a user accesses the html file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
WordPress plugin Shared Files 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Shared Files 1.7.48及之前版本存在跨站脚本漏洞，该漏洞源于html文件上传时sanitize_file函数输入清理和转义不足，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
anssilaitila Shared Files – Frontend File Upload Form & Secure File Sharing * ~ 1.7.48 -

II. Public POCs for CVE-2025-4392

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10081 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
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POC zip download
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III. Intelligence Information for CVE-2025-4392

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Patches & Fixes for CVE-2025-4392 (1)

IV. Related Vulnerabilities

Same product: Shared Files – Frontend File Upload Form & Secure File Sharing
Same vendor: anssilaitila
Same weakness: CWE-79

V. Comments for CVE-2025-4392

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