Vulnerability-Lookup

FKIE_CVE-2026-18674

Vulnerability from fkie_nvd - Published: 2026-08-17 13:16 - Updated: 2026-08-31 19:22

Severity

7.0 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:N

Summary

On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones can have the global control plane store and re-distribute those resources as belonging to another zone. The result is a cross-zone isolation bypass: the holder of a single enrolled zone's credential can inject, attribute, and overwrite resources in another zone's namespace mesh-wide. The root cause lives in Kuma's open-source KDS sync code, which Kong Mesh's control plane is built on.

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/17456
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17458
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17459
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17460
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17461
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17462
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/pull/17463
	02762ae7-200e-4b20-9b2b-a77d5b8fc4cb	https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "kuma-cp"
          ],
          "platforms": [
            "Linux"
          ],
          "product": "Kong Mesh",
          "vendor": "Kong Inc.",
          "versions": [
            {
              "lessThan": "2.7.29",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.9.19",
              "status": "affected",
              "version": "2.8.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.11.18",
              "status": "affected",
              "version": "2.10.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.12.14",
              "status": "affected",
              "version": "2.12.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.13.10",
              "status": "affected",
              "version": "2.13.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.14.2",
              "status": "affected",
              "version": "2.14.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones can have the\u00a0global control plane store and re-distribute those resources as belonging to another zone.\n\n\n\nThe result is a cross-zone isolation bypass: the holder of a single enrolled zone\u0027s credential can inject, attribute, and overwrite resources in another zone\u0027s namespace mesh-wide.\n\n\n\n\nThe root cause lives in Kuma\u0027s open-source KDS sync code, which Kong Mesh\u0027s control plane is built on."
    }
  ],
  "id": "CVE-2026-18674",
  "lastModified": "2026-08-31T19:22:43.473",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "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": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/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": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18674",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-17T14:46:37.265087Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-17T13:16:51.820",
  "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/17456"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17458"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17459"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17460"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17461"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17462"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/pull/17463"
    },
    {
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "url": "https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4"
    }
  ],
  "sourceIdentifier": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb",
      "type": "Secondary"
    }
  ]
}

CVE-2026-18674 (GCVE-0-2026-18674)

Vulnerability from cvelistv5 – Published: 2026-08-17 12:08 – Updated: 2026-08-17 14:46

Title

Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier

Summary

Severity

7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 14:46 UTC

CWE

CWE-345 - Insufficient Verification of Data Authenticity
CWE-863 - Incorrect Authorization

Assigner

Kong CNA under the mitre root

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

References

9 references

URL	Tags
https://github.com/kumahq/kuma/security/advisorie…	vendor-advisory
https://github.com/kumahq/kuma/pull/17456	patch
https://github.com/kumahq/kuma/pull/17458	patch
https://github.com/kumahq/kuma/pull/17461	patch
https://github.com/kumahq/kuma/pull/17463	patch
https://github.com/kumahq/kuma/pull/17462	patch
https://github.com/kumahq/kuma/pull/17460	patch
https://github.com/kumahq/kuma/pull/17459	patch
https://developer.konghq.com/mesh/changelog/	release-notes

Impacted products

1 product

Vendor	Product	Version
Kong Inc.	Kong Mesh	Affected: 0 , < 2.7.29 (semver) Affected: 2.8.0 , < 2.9.19 (semver) Affected: 2.10.0 , < 2.11.18 (semver) Affected: 2.12.0 , < 2.12.14 (semver) Affected: 2.13.0 , < 2.13.10 (semver) Affected: 2.14.0 , < 2.14.2 (semver)

Credits

johanw

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-18674",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-17T14:46:37.265087Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-17T14:46:48.378Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "kuma-cp"
          ],
          "platforms": [
            "Linux"
          ],
          "product": "Kong Mesh",
          "vendor": "Kong Inc.",
          "versions": [
            {
              "lessThan": "2.7.29",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.9.19",
              "status": "affected",
              "version": "2.8.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.11.18",
              "status": "affected",
              "version": "2.10.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.12.14",
              "status": "affected",
              "version": "2.12.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.13.10",
              "status": "affected",
              "version": "2.13.0",
              "versionType": "semver"
            },
            {
              "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 only if you run a multi-zone deployment of Kong Mesh. If a threat actor controls, or holds a valid zone token for, at least one enrolled zone they can leverage the issue.\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cspan\u003eYou are not affected if you run a single-zone deployment.\u003c/span\u003e\u003c/p\u003e"
            }
          ],
          "value": "You are affected only if you run a multi-zone deployment of Kong Mesh. If a threat actor controls, or holds a valid zone token for, at least one enrolled zone they can leverage the issue.\u00a0\n\n\n\nYou are not affected if you run a single-zone deployment."
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "johanw"
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      "descriptions": [
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          "supportingMedia": [
            {
              "base64": false,
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              "value": "\u003cp\u003eOn a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled \u003ccode\u003eControlPlane.Identifier\u003c/code\u003e rather than the authenticated zone identity derived from the connection. Authenticated zones can have the\u0026nbsp;global control plane store and re-distribute those resources as belonging to another zone.\u003c/p\u003e\u003cp\u003eThe result is a cross-zone isolation bypass: the holder of a single enrolled zone\u0027s credential can inject, attribute, and overwrite resources in another zone\u0027s namespace mesh-wide.\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThe root cause lives in Kuma\u0027s open-source KDS sync code, which Kong Mesh\u0027s control plane is built on.\u003cbr\u003e\u003c/p\u003e"
            }
          ],
          "value": "On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones can have the\u00a0global control plane store and re-distribute those resources as belonging to another zone.\n\n\n\nThe result is a cross-zone isolation bypass: the holder of a single enrolled zone\u0027s credential can inject, attribute, and overwrite resources in another zone\u0027s namespace mesh-wide.\n\n\n\n\nThe root cause lives in Kuma\u0027s open-source KDS sync code, which Kong Mesh\u0027s control plane is built on."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "Cross-zone isolation bypass"
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      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
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            "subConfidentialityImpact": "LOW",
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            "userInteraction": "NONE",
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            "vulnAvailabilityImpact": "NONE",
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          "descriptions": [
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          "name": "kumahq/kuma#17462 (release-2.11 backport)",
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            "patch"
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          "url": "https://github.com/kumahq/kuma/pull/17459"
        },
        {
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          "tags": [
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          "url": "https://developer.konghq.com/mesh/changelog/"
        }
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          "value": "Kong Mesh patched releases published"
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      "title": "Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier",
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              "value": "\u003cp\u003eRestrict which zones may enroll and protect zone tokens. No configuration flag disables the in-band attribution, so upgrading is the only fix.\u003c/p\u003e"
            }
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          "value": "Restrict which zones may enroll and protect zone tokens. No configuration flag disables the in-band attribution, so upgrading is the only fix."
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    "assignerShortName": "Kong",
    "cveId": "CVE-2026-18674",
    "datePublished": "2026-08-17T12:08:11.470Z",
    "dateReserved": "2026-08-03T15:20:40.972Z",
    "dateUpdated": "2026-08-17T14:46:48.378Z",
    "state": "PUBLISHED"
  },
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  "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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