{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-84445",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-01T20:05:09.422Z",
        "datePublished": "2026-09-14T16:11:41.401Z",
        "dateUpdated": "2026-09-14T16:36:14.966Z"
    },
    "containers": {
        "cna": {
            "title": "gRPC-Go: Denial of Service (DoS) via crash due to missing `:authority` and `Host` headers in the xDS servers",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-129",
                            "lang": "en",
                            "description": "CWE-129: Improper Validation of Array Index",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-248",
                            "lang": "en",
                            "description": "CWE-248: Uncaught Exception",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "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",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/issues/9354",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/issues/9354"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/pull/9365",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/pull/9365"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/pull/9366",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/pull/9366"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/pull/9367",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/pull/9367"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/releases/tag/v1.82.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/releases/tag/v1.82.2"
                },
                {
                    "name": "https://github.com/grpc/grpc-go/releases/tag/v1.83.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/grpc/grpc-go/releases/tag/v1.83.2"
                }
            ],
            "affected": [
                {
                    "vendor": "grpc",
                    "product": "grpc-go",
                    "versions": [
                        {
                            "version": "< 1.82.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.83.0, < 1.83.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-14T16:11:41.401Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-2v4p-qf9q-27wj",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-14T16:36:00.554548Z",
                                "id": "CVE-2026-84445",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-14T16:36:14.966Z"
                }
            }
        ]
    }
}