# CVE-2026-54593

## Summary

- **CVE ID:** CVE-2026-54593
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)
- **CWE:** CWE-1259, CWE-1270
- **Published:** Jul 28, 2026
- **Last Modified:** Jul 28, 2026

## 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.

## Affected Products

- pterodactyl — panel (< 1.12.3)

## References

- [CNA](https://github.com/pterodactyl/panel/security/advisories/GHSA-8r6w-3qq5-4p4r)
- [CNA](https://github.com/pterodactyl/panel/pull/5636)
- [CNA](https://github.com/pterodactyl/panel/commit/7ffcd636310bb72b54bac3280d2a15e727feded7)
- [CNA](https://github.com/pterodactyl/wings/commit/d0ddc80844479302abdaf9654de3bacd511c0f5c)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 29.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._