{"id":"GO-2026-6443","summary":"Server panic via missing authority or Host headers in google.golang.org/grpc","details":"In google.golang.org/grpc, servers configured with xDS routing can panic when processing requests that lack both :authority and Host headers. The HTTP/2 transport layer accepted requests missing these headers, and the xDS server routing interceptor attempted to index the empty authority slice, causing an unhandled panic and terminating the server.","aliases":["CVE-2026-84445","GHSA-2v4p-qf9q-27wj"],"modified":"2026-09-15T19:00:17.140619597Z","published":"2026-09-15T18:39:25Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-6443","review_status":"REVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj"},{"type":"REPORT","url":"https://github.com/grpc/grpc-go/issues/9354"},{"type":"FIX","url":"https://github.com/grpc/grpc-go/pull/9365"}],"affected":[{"package":{"name":"google.golang.org/grpc","ecosystem":"Go","purl":"pkg:golang/google.golang.org/grpc"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.82.2"},{"introduced":"1.83.0"},{"fixed":"1.83.2"},{"introduced":"1.84.0-dev"},{"fixed":"1.85.0-dev.0.20260825072537-93e31b48545e"}]}],"ecosystem_specific":{"imports":[{"symbols":["http2Server.HandleStreams","http2Server.operateHeaders"],"path":"google.golang.org/grpc/internal/transport"},{"path":"google.golang.org/grpc/internal/xds/server","symbols":["RouteAndProcess"]}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6443.json"}}],"schema_version":"1.9.0"}