CVE-2025-53365

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-53365
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-53365.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-53365
Aliases
Published
2025-07-04T22:15:22Z
Modified
2025-07-08T16:50:59.977542Z
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/modelcontextprotocol/python-sdk

Affected ranges

Type
GIT
Repo
https://github.com/modelcontextprotocol/python-sdk
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

v0.*

v0.6.0
v0.8.0
v0.9.0
v0.9.1

v1.*

v1.0.0
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.2.0
v1.2.0rc1
v1.4.0
v1.4.1
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.8.1
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v1.9.4