Uncaught Exception Affecting google.golang.org/grpc/internal/transport package, versions <1.82.2>=1.83.0 <1.83.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GOOGLEGOLANGORGGRPCINTERNALTRANSPORT-19651825
- published9 Sept 2026
- disclosed8 Sept 2026
- creditmatiasinsaurralde
Introduced: 8 Sep 2026
NewCVE-2026-84445 Â (opens in a new tab)How to fix?
Upgrade google.golang.org/grpc/internal/transport to version 1.82.2, 1.83.2 or higher.
Overview
Affected versions of this package are vulnerable to Uncaught Exception through the HTTP/2 header processing path in internal/transport/http2_server.go and internal/xds/server/routing.go. An attacker can crash the server by sending a gRPC request that omits both the :authority and Host headers. In xds.NewGRPCServer() deployments, that malformed request reaches the xDS routing interceptor, which expects an authority value and then indexes into an empty header slice. The resulting panic terminates the server process, causing a complete outage for clients connected to that gRPC server.