{"id":"CVE-2026-84445","revision":"ca78f3678ee749c6b16461d08479b0ef","records":[{"revision":"ca78f3678ee749c6b16461d08479b0ef","observedAt":"2026-10-25T16:19:16.24+00:00","statement":{"source":"nvd","id":"CVE-2026-84445","aliases":[],"title":"gRPC-Go is the Go language implementation of gRPC. Prior to 1.82.2 and 1.83.2, servers created with xds.NewGRPCServer() allow internal/transport/http2_server.go to accept an RPC containing neither the :authority header nor the Host header, …","description":"gRPC-Go is the Go language implementation of gRPC. Prior to 1.82.2 and 1.83.2, servers created with xds.NewGRPCServer() allow internal/transport/http2_server.go to accept an RPC containing neither the :authority header nor the Host header, while RouteAndProcess in internal/xds/server/routing.go assumes that an authority value exists and indexes the empty slice. A remote client that can complete transport connection establishment can trigger an index-out-of-bounds panic that is not recovered by the per-RPC goroutine and terminates the entire server process. In insecure or ordinary TLS deployments the request can be unauthenticated, while strict mTLS or ALTS deployments require valid transport credentials before the malformed RPC can reach the interceptor. This issue is fixed in versions 1.82.2 and 1.83.2.","state":0,"publishedAt":"2026-09-14T17:17:51.743+00:00","modifiedAt":"2026-09-25T14:10:13.927+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.7,"severity":"HIGH"}],"references":["https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7","https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4","https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f","https://github.com/grpc/grpc-go/issues/9354","https://github.com/grpc/grpc-go/pull/9365","https://github.com/grpc/grpc-go/pull/9366","https://github.com/grpc/grpc-go/pull/9367","https://github.com/grpc/grpc-go/releases/tag/v1.82.2","https://github.com/grpc/grpc-go/releases/tag/v1.83.2","https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84445","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-129","CWE-248"],"productCriteria":[],"sourceDates":{"published":"2026-09-14T17:17:51.743","lastModified":"2026-09-25T14:10:13.927"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-84445","identifiers":["CVE-2026-84445"]},"retained":false,"historicalAffected":[]}],"coverage":[]}