FKIE_CVE-2026-26939

Vulnerability from fkie_nvd - Published: 2026-03-19 18:16 - Updated: 2026-03-23 13:36
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
Missing Authorization (CWE-862) in Kibana’s server-side Detection Rule Management can lead to Unauthorized Endpoint Response Action Configuration (host isolation, process termination, and process suspension) via CAPEC-1 (Accessing Functionality Not Properly Constrained by ACLs). This requires an authenticated attacker with rule management privileges.
References
security@elastic.cohttps://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-19/385530Vendor Advisory
Impacted products
Vendor Product Version
elastic kibana *
elastic kibana *
elastic kibana 9.3.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E939FB01-9CDD-4A24-B5E9-6F7A8C984917",
              "versionEndExcluding": "8.19.12",
              "versionStartIncluding": "8.0.0",
              "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": "Missing Authorization (CWE-862) in Kibana\u2019s server-side Detection Rule Management can lead to Unauthorized Endpoint Response Action Configuration (host isolation, process termination, and process suspension) via CAPEC-1 (Accessing Functionality Not Properly Constrained by ACLs). This requires an authenticated attacker with rule management privileges."
    },
    {
      "lang": "es",
      "value": "Autorizaci\u00f3n Faltante (CWE-862) en la Gesti\u00f3n de Reglas de Detecci\u00f3n del lado del servidor de Kibana puede llevar a la Configuraci\u00f3n de Acciones de Respuesta de Punto Final No Autorizada (aislamiento de host, terminaci\u00f3n de proceso y suspensi\u00f3n de proceso) a trav\u00e9s de CAPEC-1 (Acceso a Funcionalidad No Restringida Adecuadamente por ACLs). Esto requiere un atacante autenticado con privilegios de gesti\u00f3n de reglas."
    }
  ],
  "id": "CVE-2026-26939",
  "lastModified": "2026-03-23T13:36:57.857",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security@elastic.co",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-19T18:16:21.690",
  "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-2026-19/385530"
    }
  ],
  "sourceIdentifier": "security@elastic.co",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security@elastic.co",
      "type": "Secondary"
    }
  ]
}


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Sightings

Author Source Type Date

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.