{"cve":"CVE-2026-71485","nvd":{"published":"2026-08-20T21:17:08.707","modified":"2026-10-18T20:10:00.110","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-290"],"references":["https://github.com/centrifugal/centrifugo/commit/84d38cea1dd2efa24375a148817a974c8727f4b0","https://github.com/centrifugal/centrifugo/pull/1182","https://github.com/centrifugal/centrifugo/releases/tag/v6.9.0","https://github.com/centrifugal/centrifugo/security/advisories/GHSA-9468-v6mj-fppw"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-71485","score":0.00609,"percentile":0.48874,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-9468-v6mj-fppw","url":"https://osv.dev/vulnerability/GHSA-9468-v6mj-fppw","summary":"Centrifugo: Client-forgeable headers emulation lets any client spoof headers forwarded to proxy backends","modified":"2026-09-28T17:11:21.029419736Z","packages":[{"ecosystem":"Go","name":"github.com/centrifugal/centrifugo","purl":"pkg:golang/github.com/centrifugal/centrifugo","ranges":["<6.9.0"],"fixed":["6.9.0"]}]},{"id":"GO-2026-6490","url":"https://osv.dev/vulnerability/GO-2026-6490","summary":"Centrifugo: Client-forgeable headers emulation lets any client spoof headers forwarded to proxy backends in github.com/centrifugal/centrifugo","modified":"2026-09-28T17:00:16.955667660Z","packages":[{"ecosystem":"Go","name":"github.com/centrifugal/centrifugo","purl":"pkg:golang/github.com/centrifugal/centrifugo","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/centrifugal/centrifugo/v3","purl":"pkg:golang/github.com/centrifugal/centrifugo/v3","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/centrifugal/centrifugo/v4","purl":"pkg:golang/github.com/centrifugal/centrifugo/v4","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/centrifugal/centrifugo/v5","purl":"pkg:golang/github.com/centrifugal/centrifugo/v5","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/centrifugal/centrifugo/v6","purl":"pkg:golang/github.com/centrifugal/centrifugo/v6","ranges":["<6.9.0"],"fixed":["6.9.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}