漏洞信息
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Vulnerability Title
MCP Python SDK: HTTP transports serve session requests without verifying the authenticated principal
Vulnerability Description
The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to 1.27.2, the SSE and stateful Streamable HTTP transports mcp.server.sse.SseServerTransport and mcp.server.streamable_http_manager.StreamableHTTPSessionManager route requests to existing sessions using only the session_id query parameter or Mcp-Session-Id header without verifying the authenticated principal that created the session, allowing a different bearer-token-authenticated client with a known session ID to inject JSON-RPC messages into that session. This issue is fixed in version 1.27.2.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Vulnerability Type
通过用户控制密钥绕过授权机制
Vulnerability Title
Model Context Protocol MCP Python SDK 授权问题漏洞
Vulnerability Description
Model Context Protocol MCP Python SDK是Model Context Protocol组织的一款Python软件开发工具包。 Model Context Protocol MCP Python SDK 1.27.2之前版本存在授权问题漏洞,该漏洞源于SSE和有状态的Streamable HTTP传输仅使用session_id查询参数或Mcp-Session-Id标头将请求路由到现有会话,而未验证创建该会话的认证主体,允许知道会话ID的、通过bearer-token认证的不
CVSS Information
N/A
Vulnerability Type
N/A