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CVE-2025-46827

Estado: AnalizadaMedia (5.4)—

Graylog is a free and open log management platform. Prior to versions 6.0.14, 6.1.10, and 6.2.0, it is possible to obtain user session cookies by submitting an HTML form as part of an Event Definition Remediation Step field. For this attack to succeed, the attacker needs a user account with permissions to create event definitions, while the user must have permissions to view alerts. Additionally, an active Input must be present on the Graylog server that is capable of receiving form data (e.g. a HTTP input, TCP raw or syslog etc). Versions 6.0.14, 6.1.10, and 6.2.0 fix the issue. No known workarounds are available, as long as the relatively rare prerequisites are met.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Graylog — Graylog

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-46827",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-46827",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-05-07T15:50:00.746331Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "Graylog2",
          "product": "graylog2-server",
          "versions": [
            {
              "status": "affected",
              "version": "< 6.0.14"
            },
            {
              "status": "affected",
              "version": ">= 6.1.0, < 6.1.10"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-05-07T16:15:22.720",
  "references": [
    {
      "url": "https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-76vf-mpmx-777j",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Graylog is a free and open log management platform. Prior to versions 6.0.14, 6.1.10, and 6.2.0, it is possible to obtain user session cookies by submitting an HTML form as part of an Event Definition Remediation Step field. For this attack to succeed, the attacker needs a user account with permissions to create event definitions, while the user must have permissions to view alerts. Additionally, an active Input must be present on the Graylog server that is capable of receiving form data (e.g. a HTTP input, TCP raw or syslog etc). Versions 6.0.14, 6.1.10, and 6.2.0 fix the issue. No known workarounds are available, as long as the relatively rare prerequisites are met."
    },
    {
      "lang": "es",
      "value": "Graylog es una plataforma de gestión de registros gratuita y abierta. En versiones anteriores a las 6.0.14, 6.1.10 y 6.2.0, era posible obtener cookies de sesión de usuario enviando un formulario HTML como parte de un campo de Paso de Remediación de Definición de Evento. Para que este ataque tenga éxito, el atacante necesita una cuenta de usuario con permisos para crear definiciones de eventos, y el usuario debe tener permisos para ver alertas. Además, debe existir una entrada activa en el servidor Graylog capaz de recibir datos del formulario (por ejemplo, una entrada HTTP, TCP sin procesar o syslog, etc.). Las versiones 6.0.14, 6.1.10 y 6.2.0 solucionan el problema. No se conocen workarounds, siempre que se cumplan los prerrequisitos, relativamente poco frecuentes."
    }
  ],
  "lastModified": "2026-06-17T09:27:00.097",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:graylog:graylog:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A30D6FCD-6202-4EF5-B011-72FCB7100AE0",
              "versionEndExcluding": "6.0.14"
            },
            {
              "criteria": "cpe:2.3:a:graylog:graylog:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2AA50E84-637C-4A50-BFDE-EDF70BE7EC36",
              "versionEndExcluding": "6.1.10",
              "versionStartIncluding": "6.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}