{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "9.2.0"
              },
              {
                "fixed": "9.4.8"
              },
              {
                "introduced": "9.5.0"
              },
              {
                "fixed": "9.5.5"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "25d88452371273dd27356c98598287b669a03eae"
            },
            {
              "fixed": "c042abbb0eaaaa61b49beef21d517468861a4db2"
            },
            {
              "introduced": "8d4246a64bc255212407b1b313fe402391299c88"
            },
            {
              "fixed": "48acba663b09e70b115dd879329141506c377890"
            }
          ],
          "repo": "https://github.com/elastic/elasticsearch",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "elastic",
    "cwe_ids": [
      "CWE-674"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102409.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "9.2.0"
          },
          {
            "last_affected": "9.2.8"
          },
          {
            "introduced": "9.3.0"
          },
          {
            "last_affected": "9.3.8"
          },
          {
            "introduced": "9.4.0"
          },
          {
            "last_affected": "9.4.7"
          },
          {
            "introduced": "9.5.0"
          },
          {
            "last_affected": "9.5.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).",
  "id": "CVE-2026-102409",
  "modified": "2026-10-15T02:30:52.389249611Z",
  "published": "2026-10-06T19:31:40.592Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/elasticsearch-9-4-8-9-5-5-security-update-esa-2026-190/390863"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102409.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102409"
    }
  ],
  "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 Recursion in Elasticsearch Leading to Denial of Service"
}