Description
The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.1.0.3 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to read the stored notification email body of any booking by iterating booking_id and email_log_id, exposing customer PII including names, email addresses, phone numbers, messages, and booking dates intended to be visible only to administrators. This is exploitable by any Subscriber-level user because admin_init fires on profile.php, a wp-admin page accessible to all authenticated users.
References6
- plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0…
- plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0…
- plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0…
- plugins.trac.wordpress.org/browser/wp-booking-system/trunk/incl…
- plugins.trac.wordpress.org/changeset/3750085/wp-booking-system/…
- www.wordfence.com/threat-intel/vulnerabilities/id/a86fab4a-71ec…
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 1% percentile: 64 · as of 10 November 2026
- CWE
- CWE-862
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.