{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45021",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-28T19:30:17.834875Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-28T19:30:33.327Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kuma",
          "vendor": "kumahq",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.7.25"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.9.0, \u003c 2.9.15"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.11.0, \u003c 2.11.13"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.12.0, \u003c 2.12.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.13.0, \u003c 2.13.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5, the default kuma-cp config leaks the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. CorsAllowedDomains: [\".*\"] reflects any Origin, and LocalhostIsAdmin: true promotes requests from 127.0.0.1 to mesh-system:admin. A cross-origin fetch() from a malicious page returns the admin JWT and signing material. This vulnerability is fixed in 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-942",
              "description": "CWE-942: Permissive Cross-domain Policy with Untrusted Domains",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-28T17:45:14.434Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2"
        },
        {
          "name": "https://github.com/kumahq/kuma/pull/16416",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/pull/16416"
        },
        {
          "name": "https://github.com/kumahq/kuma/pull/16423",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/pull/16423"
        },
        {
          "name": "https://github.com/kumahq/kuma/pull/16424",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/pull/16424"
        },
        {
          "name": "https://github.com/kumahq/kuma/pull/16425",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/pull/16425"
        },
        {
          "name": "https://github.com/kumahq/kuma/pull/16426",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/pull/16426"
        },
        {
          "name": "https://github.com/kumahq/kuma/pull/16427",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/pull/16427"
        },
        {
          "name": "https://github.com/kumahq/kuma/commit/8fefa8595d44eb68d922405702ed7a0826322907",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kumahq/kuma/commit/8fefa8595d44eb68d922405702ed7a0826322907"
        }
      ],
      "source": {
        "advisory": "GHSA-3vcp-chfh-f6r2",
        "discovery": "UNKNOWN"
      },
      "title": "Kuma: Default kuma-cp leaks admin token cross-origin via CORS wildcard + LocalhostIsAdmin"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45021",
    "datePublished": "2026-05-28T17:45:14.434Z",
    "dateReserved": "2026-05-08T16:58:28.896Z",
    "dateUpdated": "2026-05-28T19:30:33.327Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}