{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "9.1.0"
              },
              {
                "fixed": "9.4.5"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "00e7d33bf08f1476229d9d1642e2da46cfebdd53"
            },
            {
              "fixed": "adc1f04ffdd393d1977990338d5512c5eaf1ce94"
            }
          ],
          "repo": "https://github.com/elastic/elasticsearch",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "9.1.0"
              },
              {
                "fixed": "9.4.5"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "9f30374092edd41719399f7ef81cb7ae78d8a3ab"
            },
            {
              "fixed": "bc80ff828630b51dd591207f43a54ea5ebf53270"
            }
          ],
          "repo": "https://github.com/elastic/kibana",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "elastic",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72666.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "9.1.0"
          },
          {
            "last_affected": "9.4.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized query execution against Elastic Agents that are assigned to a Kibana space the requesting user has no access to, via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A user who is authorized to run Osquery live queries in one space can have a query carried out on hosts belonging to another space, resulting in disclosure of information from those hosts to the Osquery results data stream.",
  "id": "CVE-2026-72666",
  "modified": "2026-09-04T03:30:55.300557473Z",
  "published": "2026-08-13T19:11:34.283Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/kibana-9-4-5-security-update-esa-2026-97/389537"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72666.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72666"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Query Execution on Managed Hosts"
}