Description
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.
References8
- plugins.trac.wordpress.org/browser/booking-calendar-contact-for…
- plugins.trac.wordpress.org/browser/booking-calendar-contact-for…
- plugins.trac.wordpress.org/browser/booking-calendar-contact-for…
- plugins.trac.wordpress.org/browser/booking-calendar-contact-for…
- plugins.trac.wordpress.org/browser/booking-calendar-contact-for…
- plugins.trac.wordpress.org/browser/booking-calendar-contact-for…
- plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&repo…
- www.wordfence.com/threat-intel/vulnerabilities/id/a3977d10-239d…
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 27 · as of 13 November 2026
- CWE
- CWE-639
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.