CVE-2020-35416: Onlineonly Phpjabbers Appointment Scheduler

Medium severity, CVSS 6.1. EPSS: 2.7% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities exist in PHPJabbers Appointment Scheduler 2.3, in the index.php admin login webpage (with different request parameters), allows remote attackers to inject arbitrary web script or HTML.

Affected products

• Onlineonly Phpjabbers Appointment Scheduler: version 2.3 only

Published 2020-12-15. Last modified 2026-06-17.