CVE-2026-53716

{"id": "CVE-2026-53716", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "envoyproxy", "product": "gateway", "versions": [{"status": "affected", "version": "< 1.7.4"}, {"status": "affected", "version": ">= 1.8.0-rc.0, < 1.8.1"}]}]}], "published": "2026-09-14T21:17:12.983", "references": [{"url": "https://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/pull/9171", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/pull/9172", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/pull/9173", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/releases/tag/v1.7.4", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/releases/tag/v1.8.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56", "source": "security-advisories@github.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-789"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-14T21:17:12.983", "sourceIdentifier": "security-advisories@github.com"}