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Medium severity · published Oct 17, 2026
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
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WB
WP Booking System – Booking Calendar · murgroland
through 2.1.0.3 · source: vendor
Affected product
WB
WP Booking System – Booking Calendar
murgroland
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109368
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109368
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/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/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/changeset/3750120/wp-booking-system/trunk/includes/base/admin/calendar/functions-actions-ajax-calendar.php
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
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