gRPC-Go: Denial of Service (DoS) via crash due to missing `:authority` and `Host` headers in the xDS servers
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| grpc | grpc-go | affected |
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Github GHSA |
GHSA-2v4p-qf9q-27wj | gRPC-Go xDS servers: Denial of Service (DoS) via crash due to missing `:authority` and `Host` headers |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.641% probability within 30 days)
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-125 | |
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| Metrics |
threat_severity
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cvssV3_1
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| Type | Values Removed | Values Added |
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| First Time appeared |
Grpc
Grpc grpc-go |
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| Vendors & Products |
Grpc
Grpc grpc-go |
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| 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. | |
| Title | gRPC-Go: Denial of Service (DoS) via crash due to missing `:authority` and `Host` headers in the xDS servers | |
| Weaknesses | CWE-129 CWE-248 |
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| References |
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| Metrics |
cvssV4_0
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OpenCVE enrichment
Updated: Sep 21, 2026, 12:30 AM
Github GHSA