Vulnerability-Lookup

GHSA-G5RR-FGVG-Q29H

Vulnerability from github – Published: 2026-07-21 21:32 – Updated: 2026-07-21 21:32

Details

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63136"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T21:16:52Z",
    "severity": "MODERATE"
  },
  "details": "Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.",
  "id": "GHSA-g5rr-fgvg-q29h",
  "modified": "2026-07-21T21:32:42Z",
  "published": "2026-07-21T21:32:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63136"
    },
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/elasticsearch-8-19-15-9-2-9-9-3-4-security-update-esa-2026-60/388559"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-63136 (GCVE-0-2026-63136)

Vulnerability from cvelistv5 – Published: 2026-07-21 20:20 – Updated: 2026-07-22 19:41

Title

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

elastic

References

1 reference

URL	Tags
https://discuss.elastic.co/t/elasticsearch-8-19-1…

Impacted products

1 product

Vendor	Product	Version
Elastic	Elasticsearch	Affected: 8.0.0 , ≤ 8.19.14 (semver) Affected: 9.3.0 , ≤ 9.3.3 (semver) Affected: 9.0.0 , ≤ 9.2.8 (semver)

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  "containers": {
    "adp": [
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        "metrics": [
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            "other": {
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                "id": "CVE-2026-63136",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-22T19:31:50.834030Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-22T19:41:00.574Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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    "cna": {
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          "product": "Elasticsearch",
          "vendor": "Elastic",
          "versions": [
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              "lessThanOrEqual": "8.19.14",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "9.3.3",
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      "impacts": [
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      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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          "scenarios": [
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      "source": {
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      "title": "Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service",
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  "cveMetadata": {
    "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
    "assignerShortName": "elastic",
    "cveId": "CVE-2026-63136",
    "datePublished": "2026-07-21T20:20:07.409Z",
    "dateReserved": "2026-07-15T18:23:57.165Z",
    "dateUpdated": "2026-07-22T19:41:00.574Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

GHSA-G5RR-FGVG-Q29H

CVE-2026-63136 (GCVE-0-2026-63136)

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Sightings

Nomenclature