CVE-2023-48838: Phpjabbers Appointment Scheduler

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Appointment Scheduler 3.0 is vulnerable to Multiple HTML Injection issues via the SMS API Key or Default Country Code.

Affected products

• Phpjabbers Appointment Scheduler: version 3.0 only

Published 2023-12-07. Last modified 2026-06-17.