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CVE-2026-53716

Publié : 14 septembre 2026
Modifié : 16 septembre 2026
Lien officiel NVD
Score CVSS
6.5
MEDIUM

Description détaillée

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.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Références et Patchs

https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eeadhttps://github.com/envoyproxy/gateway/pull/9171https://github.com/envoyproxy/gateway/pull/9172https://github.com/envoyproxy/gateway/pull/9173https://github.com/envoyproxy/gateway/releases/tag/v1.7.4https://github.com/envoyproxy/gateway/releases/tag/v1.8.1https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56

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