Vulnerability-Lookup

CVE-2026-53714 (GCVE-0-2026-53714)

Vulnerability from cvelistv5 – Published: 2026-09-14 20:17 – Updated: 2026-09-15 19:28

Title

Envoy Gateway: xDS Control Plane Information Disclosure when Envoy Gateway operates in GatewayNamespaceMode

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, the xDS gRPC server in GatewayNamespaceMode, configured through provider.kubernetes.deploy.type=GatewayNamespace, installs a JWT StreamInterceptor but no UnaryInterceptor, leaving every unary Fetch RPC unauthenticated. The streaming interceptor also authenticates only discoveryv3.DeltaDiscoveryRequest messages; a discoveryv3.DiscoveryRequest used by the State-of-the-World protocol fails the type assertion and returns success without JWT validation. Any pod that can reach port 18000 can use the unauthenticated unary or State-of-the-World paths to retrieve TLS private keys through StreamSecrets, all xDS resources through StreamAggregatedResources, backend endpoints through StreamClusters or StreamEndpoints, and routing configuration through StreamRoutes or StreamListeners. This issue is fixed in versions 1.7.4 and 1.8.1.

Severity

7.4 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 19:28 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

GitHub_M mitre root

References

9 references

URL	Tags
https://github.com/envoyproxy/gateway/security/ad…	x_refsource_CONFIRM
https://github.com/envoyproxy/gateway/pull/8986	x_refsource_MISC
https://github.com/envoyproxy/gateway/pull/9116	x_refsource_MISC
https://github.com/envoyproxy/gateway/pull/9118	x_refsource_MISC
https://github.com/envoyproxy/gateway/commit/4df0…	x_refsource_MISC
https://github.com/envoyproxy/gateway/commit/e912…	x_refsource_MISC
https://github.com/envoyproxy/gateway/commit/f1f9…	x_refsource_MISC
https://github.com/envoyproxy/gateway/releases/ta…	x_refsource_MISC
https://github.com/envoyproxy/gateway/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
envoyproxy	gateway	Affected: < 1.7.4 Affected: >= 1.8.0-rc.0, < 1.8.1	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-53714",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-15T19:28:35.774243Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "gateway",
          "vendor": "envoyproxy",
          "versions": [
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              "version": "\u003c 1.7.4"
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          ]
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      ],
      "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, the xDS gRPC server in GatewayNamespaceMode, configured through provider.kubernetes.deploy.type=GatewayNamespace, installs a JWT StreamInterceptor but no UnaryInterceptor, leaving every unary Fetch RPC unauthenticated. The streaming interceptor also authenticates only discoveryv3.DeltaDiscoveryRequest messages; a discoveryv3.DiscoveryRequest used by the State-of-the-World protocol fails the type assertion and returns success without JWT validation. Any pod that can reach port 18000 can use the unauthenticated unary or State-of-the-World paths to retrieve TLS private keys through StreamSecrets, all xDS resources through StreamAggregatedResources, backend endpoints through StreamClusters or StreamEndpoints, and routing configuration through StreamRoutes or StreamListeners. This issue is fixed in versions 1.7.4 and 1.8.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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            "userInteraction": "NONE",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T20:17:22.256Z",
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      },
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          ],
          "url": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-22xc-xg2r-9j7v"
        },
        {
          "name": "https://github.com/envoyproxy/gateway/pull/8986",
          "tags": [
            "x_refsource_MISC"
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        },
        {
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/envoyproxy/gateway/pull/9116"
        },
        {
          "name": "https://github.com/envoyproxy/gateway/pull/9118",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/envoyproxy/gateway/pull/9118"
        },
        {
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/envoyproxy/gateway/commit/4df0809ff1ed59ffb09604da4084335b8c6647c5"
        },
        {
          "name": "https://github.com/envoyproxy/gateway/commit/e9124abc4ff4b63a218a6890c1b28a982c850465",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/envoyproxy/gateway/commit/e9124abc4ff4b63a218a6890c1b28a982c850465"
        },
        {
          "name": "https://github.com/envoyproxy/gateway/commit/f1f9829af2a231f0cae915c09800353c76622d97",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/envoyproxy/gateway/commit/f1f9829af2a231f0cae915c09800353c76622d97"
        },
        {
          "name": "https://github.com/envoyproxy/gateway/releases/tag/v1.7.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/envoyproxy/gateway/releases/tag/v1.7.4"
        },
        {
          "name": "https://github.com/envoyproxy/gateway/releases/tag/v1.8.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/envoyproxy/gateway/releases/tag/v1.8.1"
        }
      ],
      "source": {
        "advisory": "GHSA-22xc-xg2r-9j7v",
        "discovery": "UNKNOWN"
      },
      "title": "Envoy Gateway: xDS Control Plane Information Disclosure when Envoy Gateway operates in GatewayNamespaceMode"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53714",
    "datePublished": "2026-09-14T20:17:22.256Z",
    "dateReserved": "2026-06-10T16:43:31.241Z",
    "dateUpdated": "2026-09-15T19:28:46.968Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53714",
      "date": "2026-09-16",
      "epss": "0.00283",
      "percentile": "0.20921"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53714\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-14T21:17:12.677\",\"lastModified\":\"2026-09-15T20:17:18.290\",\"vulnStatus\":\"Received\",\"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, the xDS gRPC server in GatewayNamespaceMode, configured through provider.kubernetes.deploy.type=GatewayNamespace, installs a JWT StreamInterceptor but no UnaryInterceptor, leaving every unary Fetch RPC unauthenticated. The streaming interceptor also authenticates only discoveryv3.DeltaDiscoveryRequest messages; a discoveryv3.DiscoveryRequest used by the State-of-the-World protocol fails the type assertion and returns success without JWT validation. Any pod that can reach port 18000 can use the unauthenticated unary or State-of-the-World paths to retrieve TLS private keys through StreamSecrets, all xDS resources through StreamAggregatedResources, backend endpoints through StreamClusters or StreamEndpoints, and routing configuration through StreamRoutes or StreamListeners. This issue is fixed in versions 1.7.4 and 1.8.1.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"envoyproxy\",\"product\":\"gateway\",\"versions\":[{\"version\":\"\u003c 1.7.4\",\"status\":\"affected\"},{\"version\":\"\u003e= 1.8.0-rc.0, \u003c 1.8.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":4.0}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-09-15T19:28:35.774243Z\",\"id\":\"CVE-2026-53714\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-306\"}]}],\"references\":[{\"url\":\"https://github.com/envoyproxy/gateway/commit/4df0809ff1ed59ffb09604da4084335b8c6647c5\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/envoyproxy/gateway/commit/e9124abc4ff4b63a218a6890c1b28a982c850465\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/envoyproxy/gateway/commit/f1f9829af2a231f0cae915c09800353c76622d97\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/envoyproxy/gateway/pull/8986\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/envoyproxy/gateway/pull/9116\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/envoyproxy/gateway/pull/9118\",\"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-22xc-xg2r-9j7v\",\"source\":\"security-advisories@github.com\"}]}}",
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      "initial_release_date": "2026-07-30T16:40:53Z",
      "source": "SUSE CSAF VEX",
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      "version": "3"
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    "vulnrichment": {
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}

cleanstart-2026-yr40466

Vulnerability from cleanstart

Published

2026-08-13 12:10

Modified

2026-09-04 12:17

Summary

Security fixes in tigera-operator 1.39.3-r1

Details

Package tigera-operator version 1.39.3-r1 fixes 17 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...

References

URL

Type

https://github.com/tigera/operator

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.39.3-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.39.3-r1"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package tigera-operator version 1.39.3-r1 fixes 17 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...",
  "id": "CLEANSTART-2026-YR40466",
  "modified": "2026-09-04T12:17:57Z",
  "published": "2026-08-13T12:10:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tigera/operator"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in tigera-operator 1.39.3-r1",
  "upstream": [
    "CVE-2026-53713",
    "CVE-2026-53714",
    "CVE-2026-53715",
    "CVE-2026-53716",
    "CVE-2026-53717",
    "CVE-2026-53718",
    "CVE-2026-53719",
    "CVE-2026-22771",
    "ghsa-wcrf-9vrr-854f",
    "ghsa-22xc-xg2r-9j7v",
    "ghsa-8fv2-88gg-hm7q",
    "ghsa-cxpq-8v7q-cg56",
    "ghsa-fcrp-7gc2-93g7",
    "ghsa-h7pq-86h8-rp5x",
    "ghsa-m2v6-2jmh-4c68",
    "ghsa-xrwg-mqj6-6m22",
    "ghsa-259r-337f-4rfw"
  ]
}

cleanstart-2026-ze35909

Vulnerability from cleanstart

Published

2026-09-01 11:17

Modified

2026-09-04 11:14

Summary

Security fixes in tigera-operator-fips 1.38.16-r1

Details

Package tigera-operator-fips version 1.38.16-r1 fixes 7 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...

References

URL

Type

https://github.com/tigera/operator

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator-fips"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.38.16-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.38.16-r1"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package tigera-operator-fips version 1.38.16-r1 fixes 7 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...",
  "id": "CLEANSTART-2026-ZE35909",
  "modified": "2026-09-04T11:14:10Z",
  "published": "2026-09-01T11:17:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tigera/operator"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in tigera-operator-fips 1.38.16-r1",
  "upstream": [
    "CVE-2026-53713",
    "CVE-2026-53714",
    "CVE-2026-53715",
    "CVE-2026-53716",
    "CVE-2026-53717",
    "CVE-2026-53718",
    "CVE-2026-53719"
  ]
}

cleanstart-2026-zw26373

Vulnerability from cleanstart

Published

2026-09-01 11:17

Modified

2026-09-04 11:14

Summary

Security fixes in tigera-operator-fips 1.38.16-r2

Details

Package tigera-operator-fips version 1.38.16-r2 fixes 8 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...

References

URL

Type

https://github.com/tigera/operator

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "tigera-operator-fips"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.38.16-r2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.38.16-r2"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package tigera-operator-fips version 1.38.16-r2 fixes 8 vulnerabilities: CVE-2026-53713, CVE-2026-53714, CVE-2026-53715, CVE-2026-53716, CVE-2026-53717...",
  "id": "CLEANSTART-2026-ZW26373",
  "modified": "2026-09-04T11:14:10Z",
  "published": "2026-09-01T11:17:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tigera/operator"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in tigera-operator-fips 1.38.16-r2",
  "upstream": [
    "CVE-2026-53713",
    "CVE-2026-53714",
    "CVE-2026-53715",
    "CVE-2026-53716",
    "CVE-2026-53717",
    "CVE-2026-53718",
    "CVE-2026-53719",
    "CVE-2026-56852"
  ]
}

FKIE_CVE-2026-53714

Vulnerability from fkie_nvd - Published: 2026-09-14 21:17 - Updated: 2026-09-15 20:17

Severity

7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/envoyproxy/gateway/commit/4df0809ff1ed59ffb09604da4084335b8c6647c5
	security-advisories@github.com	https://github.com/envoyproxy/gateway/commit/e9124abc4ff4b63a218a6890c1b28a982c850465
	security-advisories@github.com	https://github.com/envoyproxy/gateway/commit/f1f9829af2a231f0cae915c09800353c76622d97
	security-advisories@github.com	https://github.com/envoyproxy/gateway/pull/8986
	security-advisories@github.com	https://github.com/envoyproxy/gateway/pull/9116
	security-advisories@github.com	https://github.com/envoyproxy/gateway/pull/9118
	security-advisories@github.com	https://github.com/envoyproxy/gateway/releases/tag/v1.7.4
	security-advisories@github.com	https://github.com/envoyproxy/gateway/releases/tag/v1.8.1
	security-advisories@github.com	https://github.com/envoyproxy/gateway/security/advisories/GHSA-22xc-xg2r-9j7v

Impacted products

	Vendor	Product	Version

JSON

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, the xDS gRPC server in GatewayNamespaceMode, configured through provider.kubernetes.deploy.type=GatewayNamespace, installs a JWT StreamInterceptor but no UnaryInterceptor, leaving every unary Fetch RPC unauthenticated. The streaming interceptor also authenticates only discoveryv3.DeltaDiscoveryRequest messages; a discoveryv3.DiscoveryRequest used by the State-of-the-World protocol fails the type assertion and returns success without JWT validation. Any pod that can reach port 18000 can use the unauthenticated unary or State-of-the-World paths to retrieve TLS private keys through StreamSecrets, all xDS resources through StreamAggregatedResources, backend endpoints through StreamClusters or StreamEndpoints, and routing configuration through StreamRoutes or StreamListeners. This issue is fixed in versions 1.7.4 and 1.8.1."
    }
  ],
  "id": "CVE-2026-53714",
  "lastModified": "2026-09-15T20:17:18.290",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-53714",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-15T19:28:35.774243Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-14T21:17:12.677",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/commit/4df0809ff1ed59ffb09604da4084335b8c6647c5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/commit/e9124abc4ff4b63a218a6890c1b28a982c850465"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/commit/f1f9829af2a231f0cae915c09800353c76622d97"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/pull/8986"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/pull/9116"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/envoyproxy/gateway/pull/9118"
    },
    {
      "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-22xc-xg2r-9j7v"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-22XC-XG2R-9J7V

Vulnerability from github – Published: 2026-07-16 19:32 – Updated: 2026-07-16 19:32

Summary

Envoy Gateway: xDS Control Plane Information Disclosure when operating in GatewayNamespaceMode

Details

Impact

When Envoy Gateway runs in GatewayNamespaceMode (provider.kubernetes.deploy.type=GatewayNamespace), the xDS gRPC server is configured with a StreamInterceptor for JWT authentication but no UnaryInterceptor. The go-control-plane xDS server exposes both streaming and unary (Fetch) RPC methods for all registered discovery services. Since there is no unary interceptor, these Fetch endpoints are completely unauthenticated.

Additionally, the JWT authentication interceptor in GatewayNamespaceMode only validates tokens when the received gRPC message is of type discoveryv3.DeltaDiscoveryRequest . If the message is a discoveryv3.DiscoveryRequest — used by the State-of-the-World (SotW) xDS protocol — the type assertion fails, the validation block is skipped entirely, and RecvMsg returns nil (success) without any authentication.

Any pod in the cluster that can reach the xDS server (port 18000) can use the SotW protocol to bypass JWT authentication and access:

TLS private keys via StreamSecrets (SDS)
All xDS resources via StreamAggregatedResources (ADS)
Backend endpoints via StreamClusters / StreamEndpoints (CDS/EDS)
Routing rules via StreamRoutes / StreamListeners (RDS/LDS)

Credits

Envoy Gateway thanks @dashingDragon and @Donjon-Cerberus for reporting this issue.

Severity

7.4 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/gateway"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8.0-rc.0"
            },
            {
              "fixed": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/gateway"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-53714"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-16T19:32:23Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nWhen Envoy Gateway runs in GatewayNamespaceMode (`provider.kubernetes.deploy.type=GatewayNamespace`), the xDS gRPC server is configured with a `StreamInterceptor` for JWT authentication but no UnaryInterceptor. The go-control-plane xDS server exposes both streaming and unary (Fetch) RPC methods for all registered discovery services. Since there is no unary interceptor, these Fetch endpoints are completely unauthenticated. \n\nAdditionally, the JWT authentication interceptor in GatewayNamespaceMode only validates tokens when the received gRPC message is of type `discoveryv3.DeltaDiscoveryRequest` . If the message is a `discoveryv3.DiscoveryRequest` \u2014 used by the State-of-the-World (SotW) xDS protocol \u2014 the type assertion fails, the validation block is skipped entirely, and RecvMsg returns nil (success) without any authentication.\n\nAny pod in the cluster that can reach the xDS server (port 18000) can use the SotW protocol to bypass JWT authentication and access:\n\n* TLS private keys via StreamSecrets (SDS)\n* All xDS resources via StreamAggregatedResources (ADS)\n* Backend endpoints via StreamClusters / StreamEndpoints (CDS/EDS)\n* Routing rules via StreamRoutes / StreamListeners (RDS/LDS)\n\n### Credits\n\nEnvoy Gateway thanks @dashingDragon and @Donjon-Cerberus for reporting this issue.",
  "id": "GHSA-22xc-xg2r-9j7v",
  "modified": "2026-07-16T19:32:23Z",
  "published": "2026-07-16T19:32:23Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/gateway/security/advisories/GHSA-22xc-xg2r-9j7v"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/envoyproxy/gateway"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Envoy Gateway: xDS Control Plane Information Disclosure when operating in GatewayNamespaceMode "
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-53714 (GCVE-0-2026-53714)

cleanstart-2026-yr40466

Vulnerability from cleanstart

cleanstart-2026-ze35909

Vulnerability from cleanstart

cleanstart-2026-zw26373

Vulnerability from cleanstart

FKIE_CVE-2026-53714

GHSA-22XC-XG2R-9J7V

Impact

Credits

Tags

Sightings

Nomenclature

Related by attack behaviour