CVE-2023-48828: Phpjabbers Time Slots Booking Calendar

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

Time Slots Booking Calendar 4.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) issues via the name, plugin_sms_api_key, plugin_sms_country_code, calendar_id, title, country name, or customer_name parameter.

Affected products

• Phpjabbers Time Slots Booking Calendar: version 4.0 only

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