CVE-2026-116557

EUVD-2026-114610
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 28.4%
Common Weakness Enumeration
References
https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.5/includes/base/admin/calendar/functions-notes.php#L111
https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.5/includes/base/admin/calendar/functions-notes.php#L119
https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.5/includes/base/admin/calendar/functions-notes.php#L123
https://plugins.trac.wordpress.org/changeset/3765778/wp-booking-system/trunk/includes/base/admin/calendar/functions-notes.php
https://plugins.trac.wordpress.org/changeset?old=3755940&old_path=%2Fwp-booking-system%2Ftrunk&new=3765778&new_path=%2Fwp-booking-system%2Ftrunk
https://www.wordfence.com/threat-intel/vulnerabilities/id/b25cc768-3377-41c9-acf5-8f6c993287c9?source=cve