FKIE_CVE-2026-42401

Vulnerability from fkie_nvd - Published: 2026-05-28 20:16 - Updated: 2026-10-14 20:10
Severity
4.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user's browser session.
References
security@elastic.cohttps://discuss.elastic.co/t/kibana-8-19-16-9-3-5-security-update-esa-2026-34/386552Vendor Advisory
Impacted products
Vendor Product Version
elastic kibana *
elastic kibana *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Kibana",
          "vendor": "Elastic",
          "versions": [
            {
              "lessThanOrEqual": "9.3.4",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.19.15",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@elastic.co"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "43EDC5B3-131D-489E-8447-05C5C599E6A7",
              "versionEndExcluding": "8.19.16",
              "versionStartIncluding": "8.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E9B40710-912A-4157-9F25-89CE26C098A9",
              "versionEndExcluding": "9.3.5",
              "versionStartIncluding": "9.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user\u0027s browser session."
    },
    {
      "lang": "es",
      "value": "La Neutralizaci\u00f3n Incorrecta de la Entrada Durante la Generaci\u00f3n de P\u00e1ginas Web (CWE-79) en Kibana puede conducir a una inyecci\u00f3n HTML almacenada. Un usuario con acceso de escritura a un \u00edndice de Elasticsearch podr\u00eda persistir marcado malicioso que, cuando se renderizaba posteriormente a trav\u00e9s de una vista de Kibana afectada por otro usuario, no fue suficientemente saneado. La explotaci\u00f3n exitosa podr\u00eda resultar en manipulaci\u00f3n no autorizada de la interfaz de usuario y solicitudes de red salientes emitidas desde la sesi\u00f3n del navegador del usuario que visualiza."
    }
  ],
  "id": "CVE-2026-42401",
  "lastModified": "2026-10-14T20:10:00.190",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 1.4,
        "source": "security@elastic.co",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-42401",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T16:27:57.417044Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-28T20:16:23.620",
  "references": [
    {
      "source": "security@elastic.co",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-security-update-esa-2026-34/386552"
    }
  ],
  "sourceIdentifier": "security@elastic.co",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security@elastic.co",
      "type": "Secondary"
    }
  ]
}



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