server: restrict default CORS to allowed origins#1074
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TheodorNEngoy wants to merge 1 commit intomodelcontextprotocol:mainfrom
Open
server: restrict default CORS to allowed origins#1074TheodorNEngoy wants to merge 1 commit intomodelcontextprotocol:mainfrom
TheodorNEngoy wants to merge 1 commit intomodelcontextprotocol:mainfrom
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The inspector server currently installs
cors()with default (permissive) settings.This PR makes the default CORS policy match the existing origin allowlist logic:
ALLOWED_ORIGINS(comma-separated) or default to loopback origins based onCLIENT_PORT.Originheader).originValidationMiddlewarein place (defense in depth).This reduces the blast radius if the proxy auth is disabled (
DANGEROUSLY_OMIT_AUTH) or misconfigured.