{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.19.17"
              },
              {
                "introduced": "9.0.0"
              },
              {
                "fixed": "9.3.6"
              },
              {
                "introduced": "9.4.0"
              },
              {
                "fixed": "9.4.3"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "1b6a7ece17463df5ff54a3e1302d825889aa1161"
            },
            {
              "fixed": "402bbb9d596fffa14980c1dd23afca6c7c765908"
            },
            {
              "introduced": "112859b85d50de2a7e63f73c8fc70b99eea24291"
            },
            {
              "fixed": "1f1ab65304a7633cd6511a1fa2b65c914064e724"
            },
            {
              "introduced": "2e8528e92361c3399724226deaf2b46f933e925b"
            },
            {
              "fixed": "45f6a06b1b441b41fe711059b8720013173e7c89"
            }
          ],
          "repo": "https://github.com/elastic/elasticsearch",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.19.17"
              },
              {
                "introduced": "9.0.0"
              },
              {
                "fixed": "9.3.6"
              },
              {
                "introduced": "9.4.0"
              },
              {
                "fixed": "9.4.3"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "57ca5e139a33dd2eed927ce98d8231a1f217cd15"
            },
            {
              "fixed": "a951847dc9bf6f747f1cd9f8445c4fc10ce85d40"
            },
            {
              "introduced": "504d6bfa94cca17fabb76e06152c30c4f0c3efdd"
            },
            {
              "fixed": "23c54dbd59f0a5bf5838a5ef65fadb4a6a4f1220"
            },
            {
              "introduced": "b2e39752e03b56f48f51943214475ddba1f8e974"
            },
            {
              "fixed": "9e9848d35f973e1f40f65d79760037228c54b7ab"
            }
          ],
          "repo": "https://github.com/elastic/kibana",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "elastic",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56151.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "9.0.0"
          },
          {
            "last_affected": "9.3.5"
          },
          {
            "introduced": "8.0.0"
          },
          {
            "last_affected": "8.19.16"
          },
          {
            "introduced": "9.4.0"
          },
          {
            "last_affected": "9.4.2"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Improper Input Validation (CWE-20) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user can submit a specially crafted Fleet policy input that is not correctly validated, which can render Fleet agent, server, and policy management functionality unavailable.",
  "id": "CVE-2026-56151",
  "modified": "2026-07-08T05:36:46.229581387Z",
  "published": "2026-07-01T16:29:25.165Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-45"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56151.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56151"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper Input Validation in Kibana Leading to Denial of Service"
}