Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.57/
- https://plugins.trac.wordpress.org/browser/appointment-hour-booking/trunk/js/fie
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a5cb1fea-134f-4c81-8f2
FAQ
What is CVE-2026-1083?
CVE-2026-1083 is a vulnerability with a CVSS score of 4.4 (MEDIUM). 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 d...
How severe is CVE-2026-1083?
CVE-2026-1083 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1083?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.