{"id":"CVE-2026-54593","aliases":["GHSA-8r6w-3qq5-4p4r","GO-2026-6120"],"url":"https://o3.security/vulnerability/CVE-2026-54593","summary":"Pterodactyl's improper JWT scoping allows subuser to upload files when not explicitly granted `file.create` permissions","details":"Pterodactyl is a free, open-source game server management panel. Prior to Panel version 1.12.3 and Wings version 1.12.2, the Wings /upload/file endpoint accepted any valid panel-signed JWT that contained server_uuid, user_uuid, and unique_id claims without checking the token's intended purpose; because the Panel issues JWTs carrying those same claims for lower-privilege operations such as WebSocket authentication and file-download links, an authenticated subuser could reuse one of those tokens (for example a WebSocket token obtained with only the websocket.connect permission) by replaying it against /upload/file to write arbitrary files to the same server, despite never being granted the file.create permission. This issue is fixed in Panel version 1.12.3 and Wings version 1.12.2.","published":"2026-07-28T15:42:56.971Z","modified":"2026-09-09T18:26:42.756461298Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"},"epss":{"score":0.00357,"percentile":0.29004,"asOf":"2026-09-11"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/pterodactyl/wings","fixedVersion":"1.12.2"},{"ecosystem":"Packagist","name":"pterodactyl/panel","fixedVersion":"1.12.3"}],"fix":{"url":"https://github.com/pterodactyl/panel/commit/7ffcd636310bb72b54bac3280d2a15e727feded7","label":"pterodactyl/panel@7ffcd63"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54593.json"},{"type":"ADVISORY","url":"https://github.com/pterodactyl/panel/security/advisories/GHSA-8r6w-3qq5-4p4r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54593"},{"type":"FIX","url":"https://github.com/pterodactyl/panel/commit/7ffcd636310bb72b54bac3280d2a15e727feded7"},{"type":"FIX","url":"https://github.com/pterodactyl/panel/pull/5636"},{"type":"FIX","url":"https://github.com/pterodactyl/wings/commit/d0ddc80844479302abdaf9654de3bacd511c0f5c"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-09T18:26:42.756461298Z"}}