FKIE_CVE-2026-26934

Vulnerability from fkie_nvd - Published: 2026-02-26 18:23 - Updated: 2026-06-17 10:26
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.
References
security@elastic.cohttps://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-12/385248Vendor Advisory
Impacted products
Vendor Product Version
elastic kibana *
elastic kibana *
elastic kibana 9.3.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Kibana",
          "vendor": "Elastic",
          "versions": [
            {
              "lessThanOrEqual": "8.19.11",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.2.5",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.3.0",
              "status": "affected",
              "version": "9.3.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@elastic.co"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D88B8A69-2A25-4EB1-AAE4-C18A9F954D03",
              "versionEndExcluding": "8.19.12",
              "versionStartIncluding": "8.18.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F14ACA8C-46A2-42EF-9F63-AEF657C6736A",
              "versionEndExcluding": "9.2.6",
              "versionStartIncluding": "9.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:elastic:kibana:9.3.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "6E90DE12-A5EC-4C3C-A86E-BF5AA0778628",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing."
    },
    {
      "lang": "es",
      "value": "La Validaci\u00f3n Incorrecta de la Cantidad Especificada en la Entrada (CWE-1284) en Kibana puede permitir a un atacante autenticado con privilegios de solo lectura causar una denegaci\u00f3n de servicio mediante Manipulaci\u00f3n de Datos de Entrada (CAPEC-153). Un atacante puede enviar una carga \u00fatil malformada y especialmente dise\u00f1ada, causando un consumo excesivo de recursos y provocando que Kibana deje de responder o se bloquee."
    }
  ],
  "id": "CVE-2026-26934",
  "lastModified": "2026-06-17T10:26:24.820",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security@elastic.co",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-26934",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-26T17:51:34.375595Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-26T18:23:07.647",
  "references": [
    {
      "source": "security@elastic.co",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-12/385248"
    }
  ],
  "sourceIdentifier": "security@elastic.co",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1284"
        }
      ],
      "source": "security@elastic.co",
      "type": "Secondary"
    }
  ]
}



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