Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-08-19 08:40

Modified

2026-09-08 08:34

Summary

Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service

Details

Inefficient Algorithmic Complexity (CWE-407) in Kibana can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted, deeply nested expression submitted to a Kibana TSVB visualization is evaluated with a worst-case cost that grows disproportionately with the size of the input. Because the evaluation runs synchronously, a single request consumes the Kibana request-processing thread indefinitely, and Kibana stops responding to all further requests until the service is restarted.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "elk",
        "purl": "pkg:bitnami/elk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "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-2026-72663"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:elasticsearch:kibana:*:*:*:*:*:node.js:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Inefficient Algorithmic Complexity (CWE-407) in Kibana can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted, deeply nested expression submitted to a Kibana TSVB visualization is evaluated with a worst-case cost that grows disproportionately with the size of the input. Because the evaluation runs synchronously, a single request consumes the Kibana request-processing thread indefinitely, and Kibana stops responding to all further requests until the service is restarted.",
  "id": "BIT-elk-2026-72663",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-08-19T08:40:33.421Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-104/389520"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72663"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service"
}

CVE-2026-72663 (GCVE-0-2026-72663)

Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:30

Title

Inefficient Algorithmic Complexity in Kibana 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 · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 20:05 UTC

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

elastic mitre root

References

1 reference

URL	Tags
https://discuss.elastic.co/t/kibana-8-19-20-and-9…

Impacted products

1 product

Vendor	Product	Version
Elastic	Kibana	Affected: 8.0.0 , ≤ 8.19.19 (semver) Affected: 9.0.0 , ≤ 9.4.4 (semver)

Show details on NVD website

JSON

To clipboard

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    "adp": [
      {
        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-72663",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T20:05:52.149230Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T20:30:35.109Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "product": "Kibana",
          "vendor": "Elastic",
          "versions": [
            {
              "lessThanOrEqual": "8.19.19",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.4.4",
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              "version": "9.0.0",
              "versionType": "semver"
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      ],
      "descriptions": [
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        }
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      "impacts": [
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          "descriptions": [
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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",
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      "problemTypes": [
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        }
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      "source": {
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      "title": "Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service",
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    "assignerShortName": "elastic",
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    "datePublished": "2026-08-13T19:13:03.935Z",
    "dateReserved": "2026-08-10T11:17:45.102Z",
    "dateUpdated": "2026-08-13T20:30:35.109Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.