{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:netfoundry:zrok:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.0.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "69b9b8dd6d96be15639338414574aa5003f5f8f2"
            }
          ],
          "repo": "https://github.com/openziti/zrok",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3jpj-v3xr-5h6g"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-284",
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40304.json"
  },
  "details": "zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL (the marker for admin-created global frontends), the condition short-circuits to false and allows the deletion to proceed without any ownership verification. A non-admin user who knows a global frontend token can call DELETE /api/v2/unaccess with any of their own environment IDs and permanently delete the global frontend, taking down all public shares routed through it. Version 2.0.1 patches the issue.",
  "id": "CVE-2026-40304",
  "modified": "2026-07-08T05:35:52.806164963Z",
  "published": "2026-04-17T21:04:23.648Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openziti/zrok/releases/tag/v2.0.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40304.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/openziti/zrok/security/advisories/GHSA-3jpj-v3xr-5h6g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40304"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records"
}