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5.3 Medium

CVE-2026-53715 Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway

Description

Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.7.4 and 1.8.1, HTTPServer.ServeHTTP in internal/wasm/httpserver.go reads the plain mappingPath2Cache map without synchronization while HTTPServer.Get writes the same map during EnvoyExtensionPolicy translation. An attacker with pod-network access to unauthenticated port 18002 and tenant permission to churn policies with distinct Wasm URLs can flood GET requests until a per-request reader overlaps a writer. Go's concurrent map read and write detection invokes runtime.throw, which the net/http connection recovery cannot catch, terminating the controller process and causing a timing-dependent, cross-tenant control-plane denial of service until Kubernetes restarts the pod. This issue is fixed in versions 1.7.4 and 1.8.1.

Affected products and versions

Product Affected versions Fixed in
gateway 1.8 1.8.0-rc.0 → < 1.8.1 1.8.1
gateway 1.7 earliest → < 1.7.4 1.7.4

References

Timeline

  1. Published
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Other CVEs of gateway

The 10 CVEs of gateway →
CVE-2026-53714 Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway 7.4 High CVE-2026-53716 Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway 6.5 Medium CVE-2026-53719 Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway 6.5 Medium CVE-2026-53718 Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway 6.4 Medium
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