The Appointment Booking Calendar plugin 1.3.18 for WordPress allows XSS via the wp-admin/admin-post.php editionarea parameter.
https://wpvulndb.com/vulnerabilities/9426
https://wordpress.org/plugins/appointment-booking-calendar/#developers
https://www.pluginvulnerabilities.com/2019/07/03/hackers-look-to-be-targeting-the-wordpress-plugin-appointment-booking-calendar-which-is-yet-another-insecure-plugin-from-code-people/
Source: Mitre, NVD
Published: 2019-08-09
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00243