CVE-2026-54593
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
A vulnerability in Pterodactyl allows an authenticated subuser to write arbitrary files to the server without the required permissions. A JWT token issued for other operations (e.g., WebSocket) can be reused for file uploads.
Risk Assessment
An attacker can overwrite game server files, potentially leading to code execution or data modification.
Recommendation
Update Panel to version 1.12.3 and Wings to version 1.12.2 or later.
Other vulnerabilities in Pterodactyl
See all- CVE-2026-61609High
A vulnerability in Pterodactyl causes a global login rate limit affecting all users. The limit is global, not per IP, allowing an attacker to block login for everyone by sending about 10 requests per minute.
- CVE-2026-35202Low
Vulnerability in Pterodactyl prior to version 1.12.3. A logic flaw in the Client API allows users to bypass database allocation limits due to a broken locking mechanism.
Original NVD description (English source)
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.