CVE-2026-1856
MEDIUM
6.4
CVSS 3.1
Description
The Appointment Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom booking field labels in all versions up to, and including, 1.4.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected WordPress components
-
Creavi Appointment Booking Calendar Plugin · creavi-booking-serviceUp to and including 1.4.4View on WordPress.org
A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.
Affected products and versions
- creavi Creavi Appointment Booking Calendar — Up to and including 1.4.4
References
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/creavi-booking-service/tags/1.1.0/assets/js/booking.js#L379
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/creavi-booking-service/trunk/assets/js/booking.js#L379
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3564451/creavi-booking-service
- www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/2618ccde-2bb0-4cd4-b415-68a671507709?source=cve
- nvd.nist.gov Official NVD record