CVE-2026-53717

{"id": "CVE-2026-53717", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53717", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-15T19:29:49.750607Z"}}], "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": "2026-09-14T20:16:45.270", "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-h7pq-86h8-rp5x", "source": "security-advisories@github.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "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, 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."}], "lastModified": "2026-09-15T20:17:18.793", "sourceIdentifier": "security-advisories@github.com"}