CVE-2023-36134: Phpjabbers Class Scheduling System

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

In PHP Jabbers Class Scheduling System 1.0, lack of verification when changing an email address and/or password (on the Profile Page) allows remote attackers to take over accounts.

Affected products

• Phpjabbers Class Scheduling System: version 1.0 only

Published 2023-08-04. Last modified 2026-06-17.