CVE-2026-1083

The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form field configuration parameters in all versions up to, and including, 1.5.60 due to insufficient input sanitization and output escaping on the 'Min length/characters' and 'Max length/characters' field configuration values. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the form builder interface. This only affects multi-site installations and installations where unfiltered_html has been disabled.

The following products are affected by CVE-2026-1083 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-1083.

URL	Resource
https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.57/js/fields-admin/01_fbuilder.ftext.js#L64
https://plugins.trac.wordpress.org/browser/appointment-hour-booking/trunk/js/fields-admin/01_fbuilder.ftext.js#L64
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3442650%40appointment-hour-booking&new=3442650%40appointment-hour-booking&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/a5cb1fea-134f-4c81-8f2f-76ee42df7f77?source=cve