Description
FeatherPanel versions before 1.3.7.10 fail to validate permissions in the SubuserController updateSubuser handler, allowing authenticated subusers to modify their own permission records. A subuser with minimal permissions can send a crafted request to grant themselves full server control, enabling unauthorized access to sensitive data, backups, and server configuration.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MythicalLTD | FeatherPanel | < 1.3.7.10 | 1.3.7.10 |
References
- Patch Commit patch
- FeatherPanel v1.3.7.10 Release Notes release-notes
- https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Controllers/User/Server/SubuserController.php#L454 technical-description
- https://github.com/MythicalLTD/FeatherPanel/blob/376b003aa9685b74153d239d2b3f64a752cdc0f0/backend/app/Helpers/ServerGateway.php technical-description
- https://github.com/MythicalLTD/FeatherPanel product
- VulnCheck Advisory: FeatherPanel before 1.3.7.10 Privilege Escalation via Subuser Permission Update third-party-advisory