CVE-2026-109368: medium-severity vulnerability in murgroland WP Booking System – Booking Calendar
WP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.3%
exploitation probability
0.3%top 83% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
murgroland · WP Booking System – Booking CalendarRelated CVEs — murgroland WP Booking System – Booking Calendar
In the same product, most dangerous first.
CVE-2024-8797MEDIUMWP Booking System – Booking Calendar <= 2.0.19.8 - Reflected Cross-Site ScriptingEPSS 0.5%CVE-2026-108123HIGHWP Booking System <= 2.1.0.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'wpbs_action=email_logs' ActionEPSS 0.3%CVE-2026-111178MEDIUMWP Booking System <= 2.1.0.1 - Authenticated (Administrator+) SQL Injection via 'orderby' ParameterEPSS 0.3%CVE-2026-107712MEDIUMWP Booking System <= 2.1.0.1 - Authenticated (Subscriber+) SQL Injection via 'current_month' ParameterEPSS 0.3%CVE-2026-109369MEDIUMWP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'user_permission' Parameter via Cross-Form Nonce ReuseEPSS 0.3%
References
https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/class-calendar-editor-outputter.php#L432https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/class-calendar-editor-outputter.php#L484https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/functions-actions-ajax-calendar.php#L12https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/functions-actions-ajax-calendar.php#L62https://plugins.trac.wordpress.org/changeset/3750120/wp-booking-system/trunk/includes/base/admin/calendar/functions-actions-ajax-calendar.phphttps://plugins.trac.wordpress.org/changeset?old=3730163&old_path=%2Fwp-booking-system%2Ftrunk&new=&new_path=%2Fwp-booking-system%2Ftrunkhttps://www.wordfence.com/threat-intel/vulnerabilities/id/164a276a-612f-416f-b9ef-1c2e6dd0e8e4?source=cve