CVE-2026-18496: medium-severity vulnerability in wpdevelop Booking Calendar
Booking Calendar <= 11.4.3 - Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
wpdevelop · Booking CalendarRelated CVEs — wpdevelop Booking Calendar
In the same product, most dangerous first.
CVE-2024-1207CRITICALBooking Calendar <= 9.9 - Unauthenticated SQL InjectionEPSS 3.2%CVE-2017-2150—CVE-2017-2150EPSS 2.4%CVE-2022-1463HIGHBooking Calendar <= 9.1 - PHP Object Injection via ShortcodeEPSS 1.7%CVE-2017-2151—CVE-2017-2151EPSS 0.9%CVE-2026-92619HIGHBooking Calendar <= 11.8.2 - Authenticated (Editor+) Privilege Escalation to 'data_name' ParameterEPSS 0.7%CVE-2024-8274MEDIUMWP Booking Calendar <= 10.5 - Reflected Cross-Site ScriptingEPSS 0.5%