FKIE_CVE-2026-26936

Vulnerability from fkie_nvd - Published: 2026-02-26 18:23 - Updated: 2026-03-02 16:01
Severity ?
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).
References
security@elastic.cohttps://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-14/385250Vendor Advisory
Impacted products
Vendor Product Version
elastic kibana *
elastic kibana *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6617179C-2808-48E0-9794-119BBEE79D9E",
              "versionEndExcluding": "8.19.11",
              "versionStartIncluding": "8.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "777B69F7-F3EB-491F-8B6D-418A0E9C0D02",
              "versionEndExcluding": "9.2.5",
              "versionStartIncluding": "9.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492)."
    },
    {
      "lang": "es",
      "value": "Complejidad Ineficiente de Expresiones Regulares (CWE-1333) en el Motor de Anonimizaci\u00f3n de Inferencia de IA en Kibana puede provocar denegaci\u00f3n de servicio mediante la Expansi\u00f3n Exponencial de Expresiones Regulares (CAPEC-492)."
    }
  ],
  "id": "CVE-2026-26936",
  "lastModified": "2026-03-02T16:01:07.393",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "security@elastic.co",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-02-26T18:23:07.973",
  "references": [
    {
      "source": "security@elastic.co",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-14/385250"
    }
  ],
  "sourceIdentifier": "security@elastic.co",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "security@elastic.co",
      "type": "Secondary"
    }
  ]
}


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