CVE-2026-109368
WP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.0.3 via the 'id' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract private per-event booking descriptions and booking IDs from any calendar managed by the site.
| CWE | CWE-862 |
| Vendor | murgroland |
| Product | wp booking system – booking calendar |
| Published | Oct 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
murgroland / WP Booking System – Booking Calendar
0 ≤ 2.1.0.3
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/164a276a-612f-416f-b9ef-1c2e6dd0e8e4?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/functions-actions-ajax-calendar.php#L12 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/functions-actions-ajax-calendar.php#L62 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/class-calendar-editor-outputter.php#L484 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/class-calendar-editor-outputter.php#L432 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?old=3730163&old_path=%2Fwp-booking-system%2Ftrunk&new=&new_path=%2Fwp-booking-system%2Ftrunk plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3750120/wp-booking-system/trunk/includes/base/admin/calendar/functions-actions-ajax-calendar.php
Credits
Wordfence PRISM