CRITICAL 9.1 NVD
CVE-2026-116557
The WP Booking System - Booking Calendar plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the wpbs_a
The WP Booking System - Booking Calendar plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the wpbs_action_ajax_calendar_remove_note() function in versions up to, and including, 2.1.0.5 This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary calendar notes belonging to any calendar.
References
- https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.5/includes/base/ad
- https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.5/includes/base/ad
- https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.5/includes/base/ad
- https://plugins.trac.wordpress.org/changeset/3765778/wp-booking-system/trunk/includes/base
- https://plugins.trac.wordpress.org/changeset?old=3755940&old_path=%2Fwp-booking-system%2Ft
This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-10-31 via NVD.
Risk Timeline
CVE Disclosed2026-10-31 · -1 days ago
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