Vulnerabilities / WP Booking System / WPSEC-2026-1181
WP Booking System <= 2.1.0.3 - Authenticated (Subscriber+) Missing Authorization to Booking Data Exposure via Admin Calendar Refresh AJAX Action
Medium 4.3
CWE-862Fixed in 2.1.0.4
- ID
- WPSEC-2026-1181
- Plugin
- WP Booking System – Booking Calendar (wp-booking-system)
- Affected
- all versions before 2.1.0.4
- Remediation
- Update to 2.1.0.4 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-862
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-17
- Attack surface
- WP Booking System on WPSec AttackSurface
- Fix released
- Published
Description
The WP Booking System plugin for WordPress is vulnerable to unauthorized access of data via the wpbs_refresh_calendar_editor AJAX action in all versions up to, and including, 2.1.0.3, due to a missing capability and calendar access check. The handler built the admin calendar and calendar editor output for any supplied calendar ID. This makes it possible for authenticated attackers, with subscriber-level access and above, to view the admin calendar output of arbitrary calendars, including booking IDs and private date descriptions.
References
- https://wpsec.com/vuln/WPSEC-2026-1181/
- https://plugins.svn.wordpress.org/wp-booking-system/tags/2.1.0.4/
- https://wordpress.org/plugins/wp-booking-system/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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