Model Context Protocol Python SDK: HTTP client transports followed cross-origin redirects carrying custom headers and bodies
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| modelcontextprotocol | python-sdk | affected |
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| Modelcontextprotocol | Python-sdk |
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| Source | ID | Title |
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Github GHSA |
GHSA-5h93-6whr-6q8j | Model Context Protocol Python SDK: HTTP client transports followed cross-origin redirects carrying custom headers and bodies |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.399% probability within 30 days)
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| Weaknesses | CWE-201 | |
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threat_severity
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threat_severity
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| Metrics |
ssvc
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Modelcontextprotocol
Modelcontextprotocol python-sdk |
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| Vendors & Products |
Modelcontextprotocol
Modelcontextprotocol python-sdk |
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| Description | The Model Context Protocol Python SDK is the official Python SDK for Model Context Protocol servers and clients. From 1.8.0 until 1.30.0 and 2.2.0, streamable_http_client, streamablehttp_client, sse_client, ClientSessionGroup, OAuth, and create_mcp_http_client client paths enable follow_redirects and follow redirects to a different origin, forwarding caller-supplied custom credential headers and, for 307 or 308 responses, the request body. An attacker who can influence a trusted endpoint's redirect destination can receive that material. This issue is fixed in versions 1.30.0 and 2.2.0. | |
| Title | Model Context Protocol Python SDK: HTTP client transports followed cross-origin redirects carrying custom headers and bodies | |
| Weaknesses | CWE-200 | |
| References |
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| Metrics |
cvssV3_1
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