{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71485", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-06T19:56:23.725Z", "datePublished": "2026-08-20T21:01:00.931Z", "dateUpdated": "2026-08-20T21:01:00.931Z"}, "containers": {"cna": {"title": "Centrifugo: Client-forgeable headers emulation lets any client spoof headers forwarded to proxy backends", "problemTypes": [{"descriptions": [{"cweId": "CWE-290", "lang": "en", "description": "CWE-290: Authentication Bypass by Spoofing", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-9468-v6mj-fppw", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-9468-v6mj-fppw"}, {"name": "https://github.com/centrifugal/centrifugo/pull/1182", "tags": ["x_refsource_MISC"], "url": "https://github.com/centrifugal/centrifugo/pull/1182"}, {"name": "https://github.com/centrifugal/centrifugo/commit/84d38cea1dd2efa24375a148817a974c8727f4b0", "tags": ["x_refsource_MISC"], "url": "https://github.com/centrifugal/centrifugo/commit/84d38cea1dd2efa24375a148817a974c8727f4b0"}, {"name": "https://github.com/centrifugal/centrifugo/releases/tag/v6.9.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.9.0"}], "affected": [{"vendor": "centrifugal", "product": "centrifugo", "versions": [{"version": "< 6.9.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-20T21:01:00.931Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-9468-v6mj-fppw", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "centrifugo", "vendor": "centrifugal", "versions": [{"status": "affected", "version": "< 6.9.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-71485", "lastModified": "2026-08-20T21:17:08.707", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-20T21:17:08.707", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/commit/84d38cea1dd2efa24375a148817a974c8727f4b0"}, {"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/pull/1182"}, {"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.9.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-9468-v6mj-fppw"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}