CVE-2026-18673 (GCVE-0-2026-18673)
Vulnerability from cvelistv5
Published
2026-08-12 18:20
Modified
2026-08-13 14:54
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-306 - Missing Authentication for Critical Function
Summary
When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication. An attacker with network access to a data plane's port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.
Impacted products
Vendor Product Version
Kong Inc. Kong Mesh Version: 2.14.0   
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-18673",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:53:48.881667Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T14:54:00.482Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "kuma-dp"
          ],
          "platforms": [
            "Linux"
          ],
          "product": "Kong Mesh",
          "vendor": "Kong Inc.",
          "versions": [
            {
              "lessThan": "2.14.2",
              "status": "affected",
              "version": "2.14.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eYou are affected if you run \u003ccode\u003ekuma-dp\u003c/code\u003e on the 2.14 line with the Envoy admin API on a Unix domain socket (the default) and TCP port 9902 is reachable from the pod or cluster network.\u003c/p\u003e\u003cp\u003eYou are not affected if:\u003c/p\u003e\u003cul\u003e\u003cli\u003eYou run a release line before 2.14. There the readiness service exposes only \u003ccode\u003e/ready\u003c/code\u003e.\u003c/li\u003e\u003cli\u003ePort 9902 is not reachable by untrusted workloads.\u003c/li\u003e\u003c/ul\u003e"
            }
          ],
          "value": "You are affected if you run kuma-dp on the 2.14 line with the Envoy admin API on a Unix domain socket (the default) and TCP port 9902 is reachable from the pod or cluster network.\n\n\n\nYou are not affected if:\n\n  *  You run a release line before 2.14. There the readiness service exposes only /ready.\n  *  Port 9902 is not reachable by untrusted workloads."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "https://hackerone.com/zoom9797"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eWhen \u003ccode\u003ekuma-dp\u003c/code\u003e is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication.\u003c/p\u003e\u003cp\u003eAn attacker with network access to a data plane\u0027s port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.\u003c/p\u003e"
            }
          ],
          "value": "When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication.\n\n\n\nAn attacker with network access to a data plane\u0027s port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "Information Disclosure"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306 Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-12T18:20:33.205Z",
        "orgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
        "shortName": "Kong"
      },
      "references": [
        {
          "name": "Upstream advisory GHSA-r9pv-x3pm-4r2w",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w"
        },
        {
          "name": "kumahq/kuma#17317 (master)",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/kumahq/kuma/pull/17317"
        },
        {
          "name": "kumahq/kuma#17418 (release-2.14 backport)",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/kumahq/kuma/pull/17418"
        },
        {
          "name": "Kong Product Security Advisories",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://developer.konghq.com/mesh/changelog/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eUpgrade to Kong Mesh 2.14.2. In patched versions the readiness reporter serves only \u003ccode\u003e/ready\u003c/code\u003e; the Envoy admin API stays on the Unix domain socket, which is not reachable over the pod network.\u003c/p\u003e"
            }
          ],
          "value": "Upgrade to Kong Mesh 2.14.2. In patched versions the readiness reporter serves only /ready; the Envoy admin API stays on the Unix domain socket, which is not reachable over the pod network."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-01T16:58:00.000Z",
          "value": "Kong Mesh 2.14.2 published"
        }
      ],
      "title": "Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eRestrict network access to port 9902 to trusted monitoring only, for example with a Kubernetes NetworkPolicy.\u003c/p\u003e"
            }
          ],
          "value": "Restrict network access to port 9902 to trusted monitoring only, for example with a Kubernetes NetworkPolicy."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
    "assignerShortName": "Kong",
    "cveId": "CVE-2026-18673",
    "datePublished": "2026-08-12T18:20:33.205Z",
    "dateReserved": "2026-08-03T15:18:30.454Z",
    "dateUpdated": "2026-08-13T14:54:00.482Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-18673\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-13T14:53:48.881667Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-13T14:53:55.492Z\"}}], \"cna\": {\"title\": \"Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"https://hackerone.com/zoom9797\"}], \"impacts\": [{\"descriptions\": [{\"lang\": \"en\", \"value\": \"Information Disclosure\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 5.3, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"ADJACENT\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"LOW\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Kong Inc.\", \"modules\": [\"kuma-dp\"], \"product\": \"Kong Mesh\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.14.0\", \"lessThan\": \"2.14.2\", \"versionType\": \"semver\"}], \"platforms\": [\"Linux\"], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-08-01T16:58:00.000Z\", \"value\": \"Kong Mesh 2.14.2 published\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to Kong Mesh 2.14.2. In patched versions the readiness reporter serves only /ready; the Envoy admin API stays on the Unix domain socket, which is not reachable over the pod network.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eUpgrade to Kong Mesh 2.14.2. In patched versions the readiness reporter serves only \u003ccode\u003e/ready\u003c/code\u003e; the Envoy admin API stays on the Unix domain socket, which is not reachable over the pod network.\u003c/p\u003e\", \"base64\": false}]}], \"references\": [{\"url\": \"https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w\", \"name\": \"Upstream advisory GHSA-r9pv-x3pm-4r2w\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://github.com/kumahq/kuma/pull/17317\", \"name\": \"kumahq/kuma#17317 (master)\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/kumahq/kuma/pull/17418\", \"name\": \"kumahq/kuma#17418 (release-2.14 backport)\", \"tags\": [\"patch\"]}, {\"url\": \"https://developer.konghq.com/mesh/changelog/\", \"name\": \"Kong Product Security Advisories\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Restrict network access to port 9902 to trusted monitoring only, for example with a Kubernetes NetworkPolicy.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eRestrict network access to port 9902 to trusted monitoring only, for example with a Kubernetes NetworkPolicy.\u003c/p\u003e\", \"base64\": false}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication.\\n\\n\\n\\nAn attacker with network access to a data plane\u0027s port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eWhen \u003ccode\u003ekuma-dp\u003c/code\u003e is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication.\u003c/p\u003e\u003cp\u003eAn attacker with network access to a data plane\u0027s port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-200\", \"description\": \"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-306\", \"description\": \"CWE-306 Missing Authentication for Critical Function\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"You are affected if you run kuma-dp on the 2.14 line with the Envoy admin API on a Unix domain socket (the default) and TCP port 9902 is reachable from the pod or cluster network.\\n\\n\\n\\nYou are not affected if:\\n\\n  *  You run a release line before 2.14. There the readiness service exposes only /ready.\\n  *  Port 9902 is not reachable by untrusted workloads.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eYou are affected if you run \u003ccode\u003ekuma-dp\u003c/code\u003e on the 2.14 line with the Envoy admin API on a Unix domain socket (the default) and TCP port 9902 is reachable from the pod or cluster network.\u003c/p\u003e\u003cp\u003eYou are not affected if:\u003c/p\u003e\u003cul\u003e\u003cli\u003eYou run a release line before 2.14. There the readiness service exposes only \u003ccode\u003e/ready\u003c/code\u003e.\u003c/li\u003e\u003cli\u003ePort 9902 is not reachable by untrusted workloads.\u003c/li\u003e\u003c/ul\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb\", \"shortName\": \"Kong\", \"dateUpdated\": \"2026-08-12T18:20:33.205Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-18673\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-13T14:54:00.482Z\", \"dateReserved\": \"2026-08-03T15:18:30.454Z\", \"assignerOrgId\": \"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb\", \"datePublished\": \"2026-08-12T18:20:33.205Z\", \"assignerShortName\": \"Kong\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…