{"id":"CVE-2026-71485","revision":"93d9f3ac23a9472f91c3e5b355eb28a8","records":[{"revision":"93d9f3ac23a9472f91c3e5b355eb28a8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-71485","aliases":[],"title":"Centrifugo: Client-forgeable headers emulation lets any client spoof headers forwarded to proxy backends","description":"Centrifugo is an open-source scalable real-time messaging server. Prior to 6.9.0, Centrifugo copies the client-controlled protocol.ConnectRequest.headers map through OnClientConnecting in internal/client/handler.go, ConnectEvent.Headers, and SetEmulatedHeadersToContext. The requestHeaders path in internal/proxy/http.go, the requestMetadata path in internal/proxy/grpc.go, and the Consume path in internal/unigrpc/grpc.go can forward an allowlisted value as a trusted backend header or metadata value. A remote client can spoof a header such as x-trusted-user for connect, refresh, subscribe, publish, RPC, and related proxy calls when the backend relies on that header for authentication or authorization. The unidirectional gRPC transport has no transport-level HTTP header that can override the emulated value. This issue is fixed in version 6.9.0.","state":0,"publishedAt":"2026-08-20T21:01:00.931+00:00","modifiedAt":"2026-08-25T15:23:47.006+00:00","affected":[{"ecosystem":"Vendor product","name":"centrifugo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"centrifugal\",\n                    \"product\": \"centrifugo\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 6.9.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/centrifugal/centrifugo/security/advisories/GHSA-9468-v6mj-fppw","https://github.com/centrifugal/centrifugo/pull/1182","https://github.com/centrifugal/centrifugo/commit/84d38cea1dd2efa24375a148817a974c8727f4b0","https://github.com/centrifugal/centrifugo/releases/tag/v6.9.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-71485","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-71485","identifiers":["CVE-2026-71485"]},"retained":false,"historicalAffected":[]}],"coverage":[]}