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 mitre root

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"
            }
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        }
      ],
      "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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          "type": "finder",
          "value": "johanw"
        }
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      "descriptions": [
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            {
              "base64": false,
              "type": "text/html",
              "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"
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          ],
          "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."
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      ],
      "impacts": [
        {
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              "lang": "en",
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      "metrics": [
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          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
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            "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",
            "vulnConfidentialityImpact": "LOW",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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      ],
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          "descriptions": [
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          "name": "Upstream advisory GHSA-m58j-fjmc-h3g4",
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          "tags": [
            "patch"
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          "url": "https://github.com/kumahq/kuma/pull/17459"
        },
        {
          "name": "Kong Mesh Changelog",
          "tags": [
            "release-notes"
          ],
          "url": "https://developer.konghq.com/mesh/changelog/"
        }
      ],
      "solutions": [
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              "value": "\u003cp\u003eUpgrade to Kong Mesh 2.7.29, 2.9.19, 2.11.18, 2.12.14, 2.13.10 or 2.14.2, whichever matches your release line. In patched versions the global KDS ingest path attributes synced resources by the authenticated connection identity instead of the in-band field.\u003c/p\u003e"
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          "value": "Upgrade to Kong Mesh 2.7.29, 2.9.19, 2.11.18, 2.12.14, 2.13.10 or 2.14.2, whichever matches your release line. In patched versions the global KDS ingest path attributes synced resources by the authenticated connection identity instead of the in-band field."
        }
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          "value": "Kong Mesh patched releases published"
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              "type": "text/html",
              "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"
            }
          ],
          "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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  "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.

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.