Vulnerability from bitnami_vulndb
Published
2026-08-19 08:39
Modified
2026-08-19 09:09
Summary
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
Details

Elasticsearch does not apply its configurable input length restriction to a user-supplied pattern accepted by an intervals query. Compiling a deeply nested pattern drives unbounded recursion that exhausts the thread stack and raises a fatal error, terminating the Elasticsearch node process and causing a denial of service for that node. An authenticated user holding only read-only privileges on a single searchable index can trigger the condition with one small search request.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "elasticsearch",
        "purl": "pkg:bitnami/elasticsearch"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.19.0"
            },
            {
              "fixed": "8.19.20"
            },
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.4.5"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-72679"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
      "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:maven:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Elasticsearch does not apply its configurable input length restriction to a user-supplied pattern accepted by an intervals query. Compiling a deeply nested pattern drives unbounded recursion that exhausts the thread stack and raises a fatal error, terminating the Elasticsearch node process and causing a denial of service for that node. An authenticated user holding only read-only privileges on a single searchable index can trigger the condition with one small search request.",
  "id": "BIT-elasticsearch-2026-72679",
  "modified": "2026-08-19T09:09:14.600Z",
  "published": "2026-08-19T08:39:45.995Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-81/389501"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72679"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Uncontrolled Recursion in Elasticsearch Leading to Denial of Service"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.