{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.7.29"
              },
              {
                "introduced": "2.8.0"
              },
              {
                "fixed": "2.9.19"
              },
              {
                "introduced": "2.10.0"
              },
              {
                "fixed": "2.11.18"
              },
              {
                "introduced": "2.12.0"
              },
              {
                "fixed": "2.12.14"
              },
              {
                "introduced": "2.13.0"
              },
              {
                "fixed": "2.13.10"
              },
              {
                "introduced": "2.14.0"
              },
              {
                "fixed": "2.14.2"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c78f8227948b4fef45b8fc0064fa9495230c6cbb"
            },
            {
              "introduced": "1110a0305eec00f1b2fd7482d6df4f3dd6a9d78e"
            },
            {
              "fixed": "924476e2052f5c5eb92d339db5231c610e674e1f"
            },
            {
              "introduced": "fed2256136e694d2a5deedb2490d382ee280fbbe"
            },
            {
              "fixed": "8b1e524df3039708e30c9f83747ac18a700adc0c"
            },
            {
              "introduced": "6b4779917a9f9f9a73ef959a22e243b9a14b4ba1"
            },
            {
              "fixed": "5e0c4351748645fa7164c4b8fbf6521e84c73861"
            },
            {
              "introduced": "99bb946e09bcdf7f7e6c1275c8bf14206db77274"
            },
            {
              "fixed": "b9b8c3f84ad8ff5fede09577439eb12cac518709"
            },
            {
              "introduced": "51c6d3819be75d9587942242cdec709bc9934321"
            },
            {
              "fixed": "a82706b54052df26826f33a8421145572689e6b5"
            }
          ],
          "repo": "https://github.com/kumahq/kuma",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m58j-fjmc-h3g4"
  ],
  "database_specific": {
    "cna_assigner": "Kong",
    "cwe_ids": [
      "CWE-345",
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18674.json"
  },
  "details": "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.\n\n\n\nThe 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.\n\n\n\n\nThe root cause lives in Kuma's open-source KDS sync code, which Kong Mesh's control plane is built on.",
  "id": "CVE-2026-18674",
  "modified": "2026-08-19T03:31:09.874201150Z",
  "published": "2026-08-17T12:08:11.470Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://developer.konghq.com/mesh/changelog/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18674.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/kumahq/kuma/security/advisories/GHSA-m58j-fjmc-h3g4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18674"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17456"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17458"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17459"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17460"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17461"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17462"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kumahq/kuma/pull/17463"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier"
}