Improper Restriction of Security Token Assignment Affecting pterodactyl/panel package, versions <1.12.3
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-PTERODACTYLPANEL-18389284
- published29 Jul 2026
- disclosed28 Jul 2026
- creditStepan Fedotov
Introduced: 28 Jul 2026
NewCVE-2026-54593 (opens in a new tab)How to fix?
Upgrade pterodactyl/panel to version 1.12.3 or higher.
Overview
pterodactyl/panel is a game management panel.
Affected versions of this package are vulnerable to Improper Restriction of Security Token Assignment via the /upload/file endpoint accepting any valid panel-signed JWT containing server_uuid, user_uuid, and unique_id claims without verifying the token's intended purpose. An attacker can upload arbitrary files by replaying a JWT obtained for lower-privilege operations, such as WebSocket authentication, even if not granted explicit file upload permissions.