CVE-2026-116557 WP Booking System - Booking Calendar - Broken Access Control

WP Booking System - Booking Calendar plugin for WordPress <= 2.1.0.5 contains a broken access control caused by missing capability check in wpbs_action_ajax_calendar_remove_note() function, letting authenticated attackers with Subscriber-level access delete arbitrary calendar notes.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
31 October 2026
Updated
1 November 2026
Weakness
CWE-862

Vendor fix

Update to the latest version beyond 2.1.0.5.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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