Vulnerability Information
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Vulnerability Title
FastMCP vulnerable to reflected XSS in client's callback page
Vulnerability Description
FastMCP is the standard framework for building MCP applications. Versions prior to 2.13.0 have a reflected cross-site scripting vulnerability in the OAuth client callback page (oauth_callback.py) where unescaped user-controlled values are inserted into the generated HTML, allowing arbitrary JavaScript execution in the callback server origin. The issue is fixed in version 2.13.0.
CVSS Information
N/A
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Vulnerability Title
FastMCP 跨站脚本漏洞
Vulnerability Description
FastMCP是Jeremiah Lowin个人开发者的一个MCP服务器构建软件。 FastMCP 2.13.0之前版本存在跨站脚本漏洞，该漏洞源于OAuth客户端回调页面未转义用户控制值，可能导致反射型跨站脚本攻击。
CVSS Information
N/A
Vulnerability Type
N/A