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Mend.io Vulnerability Database
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CVE-2025-53365
Good to know:
Date: July 4, 2025
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.
Severity Score
Related Resources (7)
Severity Score
Weakness Type (CWE)
Uncaught Exception
CWE-248Top Fix
Upgrade Version
Upgrade to version mcp - 1.10.0;mcp - 1.10.0;https://github.com/modelcontextprotocol/python-sdk.git - v1.10.0
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | HIGH |