CVE-2026-18496

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1ebfb030-c9b7-477a-8fe3-78e97da6bea9?source=cve

https://plugins.trac.wordpress.org/changeset/3633943/booking

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-96086

Details

Source: Mitre, NVD

Published: 2026-10-10

Updated: 2026-10-13

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity: Medium

EPSS

EPSS: 0.00214