{"id":"CVE-2026-40304","revision":"7a8dab9b8ba34b30822092daa40ced5e","records":[{"revision":"7a8dab9b8ba34b30822092daa40ced5e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-40304","aliases":[],"title":"zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records","description":"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.","state":0,"publishedAt":"2026-04-17T21:04:23.648+00:00","modifiedAt":"2026-04-20T14:57:24.486+00:00","affected":[{"ecosystem":"Vendor product","name":"zrok","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openziti\",\n                    \"product\": \"zrok\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.0.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/openziti/zrok/security/advisories/GHSA-3jpj-v3xr-5h6g","https://github.com/openziti/zrok/releases/tag/v2.0.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-40304","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-40304","identifiers":["CVE-2026-40304"]},"retained":false,"historicalAffected":[]}],"coverage":[]}