Vulnerability-Lookup

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

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.

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 CNA under the mitre root

CNA scorecard B 85/100 over 17 records in the last 180 days details

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	CPE status
Kong Inc.	Kong Mesh	Affected: 2.14.0 , < 2.14.2 (semver)	guessed

Credits

https://hackerone.com/zoom9797

Show details on NVD website

JSON

To clipboard

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                "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"
    }
  }
}

FKIE_CVE-2026-18673

Vulnerability from fkie_nvd - Published: 2026-08-12 19:17 - Updated: 2026-10-23 19:10

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

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."
    },
    {
      "lang": "es",
      "value": "Cuando kuma-dp est\u00e1 configurado con la API de administraci\u00f3n de Envoy en un socket de dominio Unix, que es el predeterminado, su servicio de preparaci\u00f3n en el puerto TCP 9902 - enlazado a todas las interfaces - reenv\u00eda casi toda la API de administraci\u00f3n de Envoy a cualquier llamador que pueda alcanzar el puerto, sin autenticaci\u00f3n.\n\nUn atacante con acceso de red al puerto 9902 de un plano de datos, por ejemplo, otro pod en la red del cl\u00faster, puede leer la configuraci\u00f3n de Envoy y del plano de datos sin credenciales: volcados de configuraci\u00f3n, listas de cl\u00fasteres y oyentes, estad\u00edsticas y el paquete de confianza de la malla. La exposici\u00f3n es de solo lectura: las acciones administrativas destructivas de Envoy est\u00e1n bloqueadas y las claves privadas no est\u00e1n expuestas."
    }
  ],
  "id": "CVE-2026-18673",
  "lastModified": "2026-10-23T19:10:00.167",
  "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"
    }
  ]
}

GHSA-JCRF-7PR5-JV5V

Vulnerability from github – Published: 2026-08-12 21:31 – Updated: 2026-08-12 21:31

Details

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.

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-18673"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-12T19:17:30Z",
    "severity": "MODERATE"
  },
  "details": "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": "GHSA-jcrf-7pr5-jv5v",
  "modified": "2026-08-12T21:31:37Z",
  "published": "2026-08-12T21:31:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18673"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kumahq/kuma/pull/17317"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kumahq/kuma/pull/17418"
    },
    {
      "type": "WEB",
      "url": "https://developer.konghq.com/mesh/changelog"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

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.

Vulnerability timeline

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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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Action not permitted

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

FKIE_CVE-2026-18673

GHSA-JCRF-7PR5-JV5V

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