| #1 | Simply Schedule Appointments | 100 | 1 | 0 | 50k+ | | | unlink unlink |
| #2 | Timetics – Appointment Booking Calendar & Scheduling | 99 | | 2 | 2k+ | | | mismatched plugin name |
| #3 | Hydra Booking — Appointment Scheduling & Booking Calendar | 99 | 1 | 2 | 2k+ | | | Non-prefixed class |
| #4 | Cal.com | 99 | 1 | 0 | 2k+ | | | outdated tested upto header |
| #5 | Booktics – Appointment Booking Calendar for Service Businesses | 98 | 1 | 2 | 700 | | | mismatched plugin name |
| #6 | WPS Bookings for WooCommerce | 92 | 25 | 249 | 3k+ | | | Non-prefixed global variable |
| #7 | Advanced Appointment Booking & Scheduling | 83 | 11 | 13 | 3k+ | | | Text Domain Mismatch |
| #8 | Appointment Bookings for Zoom GoogleMeet and more – Wappointment | 81 | 22 | 52 | 1k+ | | | Non-prefixed class |
| #9 | Easy!Appointments | 44 | 47 | 6 | 500 | | | Unsafe printing function |
| #10 | Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution | 41 | 113 | 18 | 20k+ | | | Exception output is not escaped |
| #11 | Radius Booking – Appointment Booking Calendar & Scheduling for Services & Events | 36 | 17 | 176 | 400 | | | Non-prefixed global variable |
| #12 | Booking Calendar | 35 | 86 | 340 | 40k+ | | | Mixed line endings |
| #13 | Appointment Hour Booking – Booking Calendar | 28 | 45 | 1,221 | 10k+ | | | Non-prefixed global variable |
| #14 | Online Scheduling and Appointment Booking System – Bookly | 25 | 1,166 | 933 | 60k+ | | | SQL query is not prepared |
| #15 | Bookit — Booking & Appointment Calendar | 25 | 570 | 1,493 | 4k+ | | | Non-prefixed global variable |
| #16 | TrueBooker – Appointment Booking and Scheduler System | 25 | 529 | 2,746 | 600 | | | Non-prefixed global variable |
| #17 | VikAppointments Services Booking Calendar | 25 | 9,762 | 5,211 | 500 | | | Output is not escaped |
| #18 | Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress | 24 | 1,879 | 957 | 100k+ | | | Output is not escaped |
| #19 | Booking calendar, Appointment Booking System | 23 | 1,079 | 1,125 | 3k+ | | | Output is not escaped |
| #20 | RepairBuddy – Repair Shop CRM & Booking Plugin for WordPress | 23 | 907 | 3,808 | 400 | | | Request data is not unslashed |
| #21 | Salon Booking System – Appointment Booking for Salons, Barbershops & Spas | 22 | 209 | 802 | 2k+ | | | Non-prefixed global variable |
