The Booking Calendar Contact Form plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.2.63 via the dex_bccf_admin_int_calendar_list.inc.php file due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to takeover other user's calendars and view user data associated with the calendar.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Booking Calendar Contact Form Plugin | — | Update booking-calendar-contact-form plugin to version 1.2.64, or a newer patched version | Apr 30, 2026 | Apr 23, 2026 |
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