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FKIE_CVE-2026-53716

Vulnerability from fkie_nvd - Published: 2026-09-14 21:17 - Updated: 2026-09-14 21:17
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
security-advisories@github.comhttps://github.com/envoyproxy/gateway/commit/5a78db82b7cf4fc5bebbeda2c50952892038a464
security-advisories@github.comhttps://github.com/envoyproxy/gateway/commit/96e2b750868a459ace4b8b68e6a6e4fb0152b9b7
security-advisories@github.comhttps://github.com/envoyproxy/gateway/commit/b4737180c7e597490c6363075c565fa8cf24eead
security-advisories@github.comhttps://github.com/envoyproxy/gateway/pull/9171
security-advisories@github.comhttps://github.com/envoyproxy/gateway/pull/9172
security-advisories@github.comhttps://github.com/envoyproxy/gateway/pull/9173
security-advisories@github.comhttps://github.com/envoyproxy/gateway/releases/tag/v1.7.4
security-advisories@github.comhttps://github.com/envoyproxy/gateway/releases/tag/v1.8.1
security-advisories@github.comhttps://github.com/envoyproxy/gateway/security/advisories/GHSA-cxpq-8v7q-cg56
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "gateway",
          "vendor": "envoyproxy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.7.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.8.0-rc.0, \u003c 1.8.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-53716",
  "lastModified": "2026-09-14T21:17:12.983",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-14T21:17:12.983",
  "references": [
    {
      "source": "security-advisories@github.com",
      "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"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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