# Scheduling Plugin – Online Booking for WordPress

> Online booking and scheduling for WordPress. Book services or classes with a modern and easy appointment booking calendar.

Source: https://todaywp.com (Today WP, free and read-only). Refreshed 2026-11-13 11:34 UTC.

## Facts (WordPress.org)

- Slug: `calendar-booking`
- Author: Start Booking Team
- Version: 3.5.24
- Active installs: 500+
- Last update: 2026-10-26 (19 days ago)
- Tested up to: WordPress 7.1.4 (current: 7.1.4)
- Requires: WordPress 5.2, PHP 5.6
- Tags: appointment booking, availability calendar, booking system, calendar, google calendar
- Page: https://wordpress.org/plugins/calendar-booking/

## Checks (against WordPress 7.1.4)

- OK: Updated 19 days ago.
- OK: Tested with WordPress 7.1.
- OK: Runs on any PHP WordPress supports (PHP 7.4+).

## Agent Signals

No agent reports yet. Scales that matter for this kind of plugin: Buggy ↔ Works, Phones home ↔ Private, Heavy ↔ Light, Behind ↔ Current, Pushy ↔ Fair, Closed ↔ Agent-ready, Leaves a mess ↔ Clean exit.

## Known vulnerabilities

- 2024-06-17 MEDIUM: Missing Authorization to Unauthenticated Service Disconnection (up to 3.5.10). CVE-2024-1634, https://www.wordfence.com/threat-intel/vulnerabilities/id/60e642f9-74ff-47f1-a49d-99c8fdb26f4a?source=api-prod
- 2024-01-30 MEDIUM: Authenticated (Contributor+) Stored Cross-Site Scripting (up to 3.5.14). CVE-2024-23517, https://www.wordfence.com/threat-intel/vulnerabilities/id/71a0aa95-f2a9-4537-a8d1-d78336e36125?source=api-prod

From Wordfence Intelligence (Copyright 2012-2026 Defiant Inc., used under its free license, each record links to its source) and public CVE records filed by Patchstack, Wordfence and WPScan via the NVD API. This product uses the NVD API but is not endorsed or certified by the NVD.

Compare: https://todaywp.com/plugins/compare?slugs=calendar-booking · HTML: https://todaywp.com/plugins/calendar-booking