CVE-2025-53365— MCP Python SDK has Unhandled Exception in Streamable HTTP Transport ,Leading to Denial of Service
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I. Basic Information for CVE-2025-53365
Vulnerability Information
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Vulnerability Title
MCP Python SDK has Unhandled Exception in Streamable HTTP Transport ,Leading to Denial of Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
The MCP Python SDK, called `mcp` on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to version 1.10.0, if a client deliberately triggers an exception after establishing a streamable HTTP session, this can lead to an uncaught ClosedResourceError on the server side, causing the server to crash and requiring a restart to restore service. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures. Version 1.10.0 contains a patch for the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未捕获的异常
Source: NVD (National Vulnerability Database)
Vulnerability Title
Model Context Protocol Python SDK 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Model Context Protocol Python SDK是Model Context Protocol开源的一个用于模型上下文协议服务器和客户端的开发工具。 Model Context Protocol Python SDK 1.10.0之前版本存在安全漏洞，该漏洞源于未捕获ClosedResourceError，可能导致服务崩溃。
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 |
|---|---|---|---|---|
| modelcontextprotocol | python-sdk | < 1.10.0 | - |
II. Public POCs for CVE-2025-53365
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|---|
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IV. Related Vulnerabilities
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