CVE-2023-33564: Phpjabbers Time Slots Booking Calendar

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Time Slots Booking Calendar v3.3.

Affected products

• Phpjabbers Time Slots Booking Calendar: version 3.3 only

Published 2023-08-01. Last modified 2026-06-17.