CVE-2026-65011

{
  "id": "CVE-2026-65011",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-22T17:16:58.837",
  "lastModified": "2026-10-24T13:10:00.147",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Graylog2 Server before commit 46a2eeb contains a missing per-entity permission check in the POST /events/definitions/{definitionId}/duplicate endpoint that allows authenticated users to clone any event definition. Attackers with the low-privilege eventdefinitions:create capability can read private event definitions including detection queries, aggregation thresholds, grouping fields, schedules, and notification bindings by duplicating them."
    },
    {
      "lang": "es",
      "value": "Graylog2 Servidor antes del commit 46a2eeb contiene una comprobación de permisos por entidad faltante en el endpoint POST /events/definitions/{definitionId}/duplicate que permite a usuarios autenticados clonar cualquier definición de evento. Atacantes con la capacidad de bajo privilegio ’eventdefinitions:create’ pueden leer definiciones de eventos privadas, incluyendo consultas de detección, umbrales de agregación, campos de agrupación, programaciones y enlaces de notificación, duplicándolas."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Graylog2",
          "product": "graylog2-server",
          "defaultStatus": "unaffected",
          "repo": "https://github.com/Graylog2/graylog2-server",
          "packageURL": "pkg:maven/org.graylog/graylog-parent",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "7.1.5",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThanOrEqual": "7.0.10",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d",
              "versionType": "git",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-22T18:23:04.454830Z",
          "id": "CVE-2026-65011",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/Graylog2/graylog2-server/commit/46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Graylog2/graylog2-server/issues/26590",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Graylog2/graylog2-server/pull/26706",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Graylog2/graylog2-server/pull/26718",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Graylog2/graylog2-server/pull/26719",
      "source": "[email protected]"
    },
    {
      "url": "https://www.vulncheck.com/advisories/graylog2-server-missing-permission-check-on-event-definition-duplicate",
      "source": "[email protected]"
    }
  ]
}