Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-72662",
    "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
    "assignerShortName": "elastic",
    "dateUpdated": "2026-09-26T20:42:11.693Z",
    "dateReserved": "2026-08-10T11:17:45.102Z",
    "datePublished": "2026-09-26T20:42:11.693Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
        "shortName": "elastic",
        "dateUpdated": "2026-09-26T20:42:11.693Z"
      },
      "title": "Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data",
      "descriptions": [
        {
          "lang": "en",
          "value": "Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user granted the Timeline feature privilege in a Kibana space could enumerate, read, modify, and delete draft Timeline objects belonging to other users in the same space. Read access is sufficient for enumeration and disclosure; the Timeline write privilege is required for modification and deletion.",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "<p>Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user granted the Timeline feature privilege in a Kibana space could enumerate, read, modify, and delete draft Timeline objects belonging to other users in the same space. Read access is sufficient for enumeration and disclosure; the Timeline write privilege is required for modification and deletion.</p>"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Elastic",
          "product": "Kibana",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "8.19.21"
            },
            {
              "version": "9.4.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "9.4.5"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "cweId": "CWE-639",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://discuss.elastic.co/t/kibana-8-19-22-9-4-6-security-update-esa-2026-103/390679"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-1",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
            }
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ],
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "availabilityImpact": "LOW",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM"
          }
        }
      ]
    }
  }
}