{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "7.1.5"
              },
              {
                "last_affected": "7.0.10"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d"
            }
          ],
          "repo": "https://github.com/graylog2/graylog2-server",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65011.json"
  },
  "details": "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.",
  "id": "CVE-2026-65011",
  "modified": "2026-07-25T03:56:15.986802016Z",
  "published": "2026-07-22T16:13:35.244Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65011.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65011"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/graylog2-server-missing-permission-check-on-event-definition-duplicate"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Graylog2/graylog2-server/issues/26590"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Graylog2/graylog2-server/commit/46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Graylog2/graylog2-server/pull/26706"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Graylog2/graylog2-server/pull/26718"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Graylog2/graylog2-server/pull/26719"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Graylog2/graylog2-server"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Graylog2 Server Missing Permission Check on Event Definition Duplicate"
}