CVE-2026-116557
Critical · 9.1CVSS
9.1
EPSS
0.3%
Published
Oct 31, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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