CVE-2025-6421: Fabian Simple Online Hotel Reservation System

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability was found in code-projects Simple Online Hotel Reservation System 1.0. It has been rated as critical. This issue affects some unknown processing of the file /admin/add_account.php. The manipulation of the argument name/admin_id leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Fabian Simple Online Hotel Reservation System: version 1.0 only

Published 2025-06-21. Last modified 2026-06-17.