Bookit — Booking & Appointment Calendar
Bookit — Booking & Appointment Calendar has 9 disclosed vulnerabilities in the WordSec catalog, reported between 2022 and 2026; all 9 are fixed as of September 2026. Their average CVSS score is 6.3, and the most serious one scores 9.8 out of 10. Severity breakdown: 1 critical and 1 high. 2023 was the busiest year with 3 disclosures.
The most common weakness is Missing Authorization, behind 5 of the records (56%). Other recurring categories include Authentication Bypass Using An Alternate Path Or Channel, Cross-Site Scripting.
Every one of the 9 issues recorded for Bookit — Booking & Appointment Calendar has a vendor fix available, so running the current release closes all known holes.
8 independent researchers contributed these findings, one record each. Bookit — Booking & Appointment Calendar is installed on roughly 4,000 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 7.1.
CVE-2023-2834BookIt <= 2.3.7 - Authentication Bypass
Read the full analysisVulnerability Records

Bookit — Booking & Appointment Calendar
Author
Nexcess
Bookit adds an appointment booking system and event calendar to your WordPress site. You define services, staff, working hours, and prices; visitors pick a date and time and submit a booking. The plugin prevents double-booking and sends configurable email notifications. What you can do: Define multiple services with duration and price; assign staff and set their working hours and days. Show availability in daily, weekly, or monthly calendar views. Place a booking form on any page via shortcode or with Elementor and WPBakery widgets. Let customers choose a service and staff, see available slots, and submit a booking (no account required unless you enable it). Receive and send email notifications for new, updated, or upcoming appointments; templates are editable in settings. Manage all appointments from the admin dashboard; optional Stripe payments in the free version. Optional BookIt Pro add-ons add WooCommerce integration, Google Calendar sync, drag-and-drop custom fields, and additional payment options (e.g. PayPal). Documentation and support are available at bookitwp.com.
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