CVE-2026-102404 affecting package rubygem-elasticsearch 8.9.0-1

{
  "id": "c616639a4a817f8580eecf23d8fb1648c4412fba6e31a3cb13ac931c14c2a0dd",
  "url": "https://osv.dev/vulnerability/AZL-106718",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-102404 affecting package rubygem-elasticsearch 8.9.0-1",
    "summary": "Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can submit a specially crafted query that causes uncontrolled memory growth in the query processing engine, resulting in an out-of-memory condition that terminates the Elasticsearch node. The condition can be triggered repeatedly, including by queries embedded in shared resources, causing persistent cluster unavailability.",
    "evidence": "osv:AZL-106718",
    "products": [
      {
        "name": {
          "value": "rubygem-elasticsearch",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-106718",
      "aliases": [
        "AZL-106718"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "8.9.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "rubygem-elasticsearch",
            "purl": "pkg:rpm/azure-linux/rubygem-elasticsearch",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-106718.json"
          }
        }
      ],
      "modified": "2026-10-15T05:37:09Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-102404"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-102404"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-102404",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 321445,
  "published_at": "2026-10-06T20:17:12+00:00"
}