The Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 11.4.3 via the wpbc_is_show_popover_in_flex_timeline() function. This makes it possible for unauthenticated attackers to extract sensitive data including names, email addresses, and phone numbers of customers who have made bookings.
History

Tue, 20 Oct 2026 01:30:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions booking Calendar
Wpdevelop
Wpdevelop booking Calendar
Vendors & Products Wordpress-extensions
Wordpress-extensions booking Calendar
Wpdevelop
Wpdevelop booking Calendar

Sun, 11 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 10 Oct 2026 05:45:00 +0000

Type Values Removed Values Added
Description The Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 11.4.3 via the wpbc_is_show_popover_in_flex_timeline() function. This makes it possible for unauthenticated attackers to extract sensitive data including names, email addresses, and phone numbers of customers who have made bookings.
Title Booking Calendar <= 11.4.3 - Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-10-10T05:30:55.792Z

Updated: 2026-10-11T16:55:18.578Z

Reserved: 2026-07-31T15:48:48.687Z

Link: CVE-2026-18496

cve-icon Vulnrichment

Updated: 2026-10-11T16:46:09.985Z

cve-icon NVD

Status : Deferred

Published: 2026-10-10T06:16:42.543

Modified: 2026-10-13T13:30:21.620

Link: CVE-2026-18496

cve-icon Redhat

No data.