{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.19.22"
              },
              {
                "introduced": "9.0.0"
              },
              {
                "fixed": "9.4.7"
              },
              {
                "introduced": "9.5.0"
              },
              {
                "fixed": "9.5.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "1b6a7ece17463df5ff54a3e1302d825889aa1161"
            },
            {
              "fixed": "3b2a41103de35e0af4064d647974032fcc1bcde9"
            },
            {
              "introduced": "112859b85d50de2a7e63f73c8fc70b99eea24291"
            },
            {
              "fixed": "9093bd876e86f531329aad3704ec9ab607c909c8"
            },
            {
              "introduced": "8d4246a64bc255212407b1b313fe402391299c88"
            },
            {
              "fixed": "9170df19cae1adb107b7b489b4d82dec66d7a337"
            }
          ],
          "repo": "https://github.com/elastic/elasticsearch",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "elastic",
    "cwe_ids": [
      "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94397.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "8.0.0"
          },
          {
            "last_affected": "8.19.21"
          },
          {
            "introduced": "9.0.0"
          },
          {
            "last_affected": "9.4.6"
          },
          {
            "introduced": "9.5.0"
          },
          {
            "last_affected": "9.5.3"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial of service via Excessive Allocation (CAPEC-130)",
  "id": "CVE-2026-94397",
  "modified": "2026-10-01T03:30:50.087259560Z",
  "published": "2026-09-26T20:42:25.311Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-9-5-4-security-update-esa-2026-183/390687"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94397.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94397"
    }
  ],
  "schema_version": "1.9.0",
  "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": "Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service"
}