WordPress Plugin Vulnerabilities
Booking Calendar < 11.5 - Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action
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.
Affects Plugins
Fixed in 11.5 References
Classification
Type
SENSITIVE DATA DISCLOSURE
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Jonah Burgess (CryptoCat)
Verified
No
WPVDB ID
Timeline
Publicly Published
2026-10-09 (about 7 days ago)
Added
2026-10-09 (about 7 days ago)
Last Updated
2026-10-10 (about 7 days ago)
