CVE-2023-48831: Phpjabbers Availability Booking Calendar

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

A lack of rate limiting in pjActionAJaxSend in Availability Booking Calendar 5.0 allows attackers to cause resource exhaustion.

Affected products

• Phpjabbers Availability Booking Calendar: version 5.0 only

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