Input validation vulnerability in Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin 1.6.8.5

The Appointment Booking Calendar is a plugin for WordPress that allows users to schedule appointments. However, there is a vulnerability in all versions up to 1.6.8.5 that allows attackers to run arbitrary shortcodes without proper validation. This means that even unauthenticated users can execute these shortcodes.

Detected in:

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Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:

> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21

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