{"affected":[{"package":{"ecosystem":"Bitnami","name":"envoy-gateway","purl":"pkg:bitnami/envoy-gateway"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.7.4"},{"introduced":"1.8.0"},{"fixed":"1.8.1"}],"type":"SEMVER"}],"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"}]}],"aliases":["CVE-2026-53717"],"database_specific":{"cpes":["cpe:2.3:a:envoyproxy:gateway:*:*:*:*:*:go:*:*"],"severity":"Medium"},"details":"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, internal/wasm/imagefetcher.go follows tenant-controlled EnvoyExtensionPolicy spec.wasm[].code.image.url values to Docker or OCI Wasm layers, and extractWasmPluginBinary uses the untrusted tar-header h.Size value to allocate memory before validating the entry name or declared size. A small PAX or GNU tar header can therefore claim a multi-terabyte entry even though the surrounding LimitReader restricts only the bytes read from the stream, and no registry allowlist prevents a permitted tenant from selecting an attacker-controlled registry that the controller can reach. The allocation is attempted for every tar entry and can cause an unrecoverable Go runtime out-of-memory failure; because the custom resource persists, reconciliation repeatedly crash-loops the shared controller and causes a single-request, non-volumetric, cluster-wide control-plane denial of service. This issue is fixed in versions 1.7.4 and 1.8.1.","id":"BIT-envoy-gateway-2026-53717","modified":"2026-09-21T09:26:48.669Z","published":"2026-09-21T08:54:58.740Z","references":[{"type":"WEB","url":"https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/pull/9171"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/pull/9172"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/pull/9173"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/releases/tag/v1.7.4"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/releases/tag/v1.8.1"},{"type":"WEB","url":"https://github.com/envoyproxy/gateway/security/advisories/GHSA-h7pq-86h8-rp5x"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53717"}],"schema_version":"1.6.2","summary":"Envoy Gateway: OCI layer extraction allocates make([]byte, h.Size) from untrusted tar header"}