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Medium severity6.5NVD Advisory· Published Sep 14, 2026· Updated Sep 16, 2026

CVE-2026-53716

CVE-2026-53716

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, getFileFromGZ in internal/wasm/httpfetcher.go calls io.ReadAll on a gzip.Reader without limiting decompressed output when a tenant-controlled EnvoyExtensionPolicy.spec.wasm[].code.http.url points to a reachable compressed Wasm payload. The 256 MiB compressed-input cap does not constrain the expanded size, no operator Wasm URL allowlist exists, and the optional sha256 check occurs only after decompression, so a comparatively small gzip stream can force a multi-gigabyte allocation in the shared controller. The resulting out-of-memory termination restarts the controller, re-reconciles the persistent custom resource, and can create a persistent cross-tenant control-plane outage. This issue is fixed in versions 1.7.4 and 1.8.1.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/envoyproxy/gatewayGo
>= 1.8.0-rc.0, < 1.8.11.8.1
github.com/envoyproxy/gatewayGo
< 1.7.41.7.4

Affected products

36

Patches

Vulnerability mechanics

References

10

News mentions

0

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