CVE-2025-53365

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/modelcontextprotocol/python-sdk/commit/7b420656de48cfdb90b39eb582e60b6d55c2f891
https://github.com/modelcontextprotocol/python-sdk/pull/967
https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-j975-95f5-7wqh

Configurations

No configuration.

History

04 Jul 2025, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-07-04 22:15

Updated : 2025-07-04 22:15

NVD link : CVE-2025-53365

Mitre link : CVE-2025-53365

CVE.ORG link : CVE-2025-53365

JSON object : View

Products Affected

No product.

CWE

CWE-248

Uncaught Exception

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