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GO-2026-6443

https://pkg.go.dev/vuln/GO-2026-6443

Severity

Unknown
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Summary

Server panic via missing authority or Host headers in google.golang.org/grpc

Description

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.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2026-84445
  • https://github.com/advisories/GHSA-2v4p-qf9q-27wj
  • https://pkg.go.dev/vuln/GO-2026-6443
  • https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj
  • https://github.com/grpc/grpc-go/issues/9354
  • https://github.com/grpc/grpc-go/pull/9365

Affected packages

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