Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/pterodactyl/panel/commit/7ffcd636310bb72b54bac3280d2a15e727fe
- https://github.com/pterodactyl/panel/pull/5636
- https://github.com/pterodactyl/panel/security/advisories/GHSA-8r6w-3qq5-4p4r
- https://github.com/pterodactyl/wings/commit/d0ddc80844479302abdaf9654de3bacd511c
FAQ
What is CVE-2026-54593?
CVE-2026-54593 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 contai...
How severe is CVE-2026-54593?
CVE-2026-54593 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54593?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.