{"id":"CVE-2026-49998","revision":"2df44b2459b74c5889bb4153bb34d96c","records":[{"revision":"2df44b2459b74c5889bb4153bb34d96c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-49998","aliases":[],"title":"Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass","description":"Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not by the resolved JWKS endpoint, issuer, audience, or trust-domain namespace, affecting client.token.jwks_public_endpoint, client.subscription_token.jwks_public_endpoint, internal/jwks/cache.go, and internal/jwks/manager.go. This issue is fixed in version 6.8.1.","state":0,"publishedAt":"2026-07-16T19:33:33.147+00:00","modifiedAt":"2026-07-17T11:13:39.15+00:00","affected":[{"ecosystem":"Vendor product","name":"centrifugo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"centrifugal\",\n                    \"product\": \"centrifugo\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 6.8.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cj","https://github.com/centrifugal/centrifugo/pull/1142","https://github.com/centrifugal/centrifugo/commit/15d785015c6f318c1b68ea40b813699c9f8bd2c4","https://github.com/centrifugal/centrifugo/releases/tag/v6.8.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-49998","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-49998","identifiers":["CVE-2026-49998"]},"retained":false,"historicalAffected":[]}],"coverage":[]}