auth, mcp: add UserID to TokenInfo for session hijacking prevention#695
Merged
findleyr merged 1 commit intomodelcontextprotocol:mainfrom Dec 8, 2025
Merged
auth, mcp: add UserID to TokenInfo for session hijacking prevention#695findleyr merged 1 commit intomodelcontextprotocol:mainfrom
findleyr merged 1 commit intomodelcontextprotocol:mainfrom
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Add a UserID field to auth.TokenInfo that TokenVerifiers can populate from JWT "sub" claims or token introspection. The streamable HTTP transport uses this to bind sessions to users, rejecting requests where the user ID doesn't match the session's original user. Fixes modelcontextprotocol#589
findleyr
requested review from
jba and
markus-kusano
and removed request for
jba
markus-kusano
approved these changes
Dec 8, 2025
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Add a UserID field to auth.TokenInfo that TokenVerifiers can populate from JWT "sub" claims or token introspection. The streamable HTTP transport uses this to bind sessions to users, rejecting requests where the user ID doesn't match the session's original user.
Fixes #589