CVE-2025-53365
highPriorität · verfolgen · 0EPSS 0.004 · 36. PerzentilEURUUSEPSS · bewertet 2026-10-27
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
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.6–8.7
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (3)
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Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-j975-95f5-7wqhMCP Python SDK has Unhandled Exception in Streamable HTTP Transport, Leading to Denial of Service2025-07-04ghsa · osvUS
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. Thank you to Rich Harang for reporting this issue.
- PYSEC-2026-1618MCP Python SDK has Unhandled Exception in Streamable HTTP Transport, Leading to Denial of Service2026-07-07vendor · osvUS
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. Thank you to Rich Harang for reporting this issue.
auch bekannt als (7)
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quellen
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Referenzen (11)
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/security/cve/cve-2025-53365cnnvd
- https://github.com/modelcontextprotocol/python-sdk/commit/7b420656de48cfdb90b39eb582e60b6d55c2f891cnnvd
- https://github.com/modelcontextprotocol/python-sdk/pull/967cnnvd
- https://github.com/modelcontextprotocol/python-sdk/releasesPatchcnnvd
- https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-j975-95f5-7wqhcnnvd
- https://github.com/modelcontextprotocol/python-sdk/commit/7b420656de48cfdb90b39eb582e60b6d55c2f891enisa_euvd
- https://github.com/modelcontextprotocol/python-sdk/pull/967enisa_euvd
- https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-j975-95f5-7wqhenisa_euvd
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