CVE-2026-4473: Unguardable Online Doctor Appointment System

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

A vulnerability was detected in itsourcecode Online Doctor Appointment System 1.0. This issue affects some unknown processing of the file /admin/appointment_action.php. The manipulation of the argument appointment_id results in sql injection. The attack can be launched remotely. The exploit is now public and may be used.

Affected products

• Unguardable Online Doctor Appointment System: version 1.0 only

Published 2026-03-20. Last modified 2026-06-17.