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CVE-2026-56149

Status: AnalyzedMedium (4.9)—

Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted machine learning request that causes excessive memory consumption, which may render the affected node unavailable.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Elastic — Elasticsearch

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-56149",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            },
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          ],
          "version": "2.0.3",
          "timestamp": "2026-07-01T17:18:43.883917Z"
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 1.2
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          "versions": [
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  "published": "2026-07-01T17:16:36.957",
  "references": [
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      "tags": [
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    {
      "lang": "en",
      "value": "Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted machine learning request that causes excessive memory consumption, which may render the affected node unavailable."
    }
  ],
  "lastModified": "2026-07-02T17:35:59.397",
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