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High severityNVD Advisory· Published Sep 14, 2026· Updated Sep 25, 2026

CVE-2026-84445

CVE-2026-84445

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
google.golang.org/grpcGo
< 1.82.21.82.2
google.golang.org/grpcGo
>= 1.83.0, < 1.83.21.83.2
google.golang.org/grpcGo
>= 1.84.0-dev, < 1.84.0-dev.0.20260825144003-d5a41119e0e31.84.0-dev.0.20260825144003-d5a41119e0e3
google.golang.org/grpcGo
>= 1.85.0-dev, < 1.85.0-dev.0.20260825072537-93e31b48545e1.85.0-dev.0.20260825072537-93e31b48545e

Affected products

33

Patches

Vulnerability mechanics

References

12

News mentions

0

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