GO-2026-6443

In google.golang.org/grpc, servers configured with xDS routing can panic when processing requests that lack both :authority and Host headers. The HTTP/2 transport layer accepted requests missing these headers, and the xDS server routing interceptor attempted to index the empty authority slice, causing an unhandled panic and terminating the server.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-6443"
}

References

Affected packages

Go / google.golang.org/grpc

Package

Name: google.golang.org/grpc; View open source insights on deps.dev
Purl: pkg:golang/google.golang.org/grpc

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.82.2

Introduced

1.83.0

Fixed

1.83.2

Introduced

1.84.0-dev

Fixed

1.85.0-dev.0.20260825072537-93e31b48545e

Ecosystem specific

{
    "imports": [
        {
            "path": "google.golang.org/grpc/internal/transport",
            "symbols": [
                "http2Server.HandleStreams",
                "http2Server.operateHeaders"
            ]
        },
        {
            "path": "google.golang.org/grpc/internal/xds/server",
            "symbols": [
                "RouteAndProcess"
            ]
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-6443.json"