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": "Awaiting Analysis",
  "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": "2026-09-30T17:43:24.057",
  "sourceIdentifier": "security-advisories@github.com"
}