Vulnerability-Lookup

FKIE_CVE-2026-18673

Vulnerability from fkie_nvd - Published: 2026-08-12 19:17 - Updated: 2026-08-31 19:22

Severity

5.3 (Medium) - 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

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.

References

	URL	Tags
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://developer.konghq.com/mesh/changelog/
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17317
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17418
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-18673",
  "lastModified": "2026-08-31T19:22:43.473",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "ADJACENT",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18673",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-13T14:53:48.881667Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-12T19:17:30.480",
  "references": [
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://developer.konghq.com/mesh/changelog/"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17317"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17418"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w"
    }
  ],
  "sourceIdentifier": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "type": "Secondary"
    }
  ]
}

CVE-2026-18673 (GCVE-0-2026-18673)

Vulnerability from cvelistv5 – Published: 2026-08-12 18:20 – Updated: 2026-08-13 14:54

Title

Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication

Summary

Severity

5.3 (Medium)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 14:53 UTC

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
CWE-306 - Missing Authentication for Critical Function

Assigner

Kong mitre root Scorecard

References

4 references

URL	Tags
https://github.com/kumahq/kuma/security/advisorie…	vendor-advisory
https://github.com/kumahq/kuma/pull/17317	patch
https://github.com/kumahq/kuma/pull/17418	patch
https://developer.konghq.com/mesh/changelog/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Kong Inc.	Kong Mesh	Affected: 2.14.0 , < 2.14.2 (semver)

Credits

https://hackerone.com/zoom9797

Show details on NVD website

JSON

To clipboard

{
  "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"
}

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.

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.
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FKIE_CVE-2026-18673

CVE-2026-18673 (GCVE-0-2026-18673)

Tags

Sightings

Nomenclature

Related by attack behaviour