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CVE-2026-1083

MEDIUM

4.4

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.

CVE Details

CVSS v3.1 Score4.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredHIGH

User InteractionNONE

Published1/28/2026

Last Modified1/29/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-79

References

https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.57/js/fields-admin/01_fbuilder.ftext.js#L64(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/appointment-hour-booking/trunk/js/fields-admin/01_fbuilder.ftext.js#L64(security@wordfence.com)

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=(security@wordfence.com)

https://www.wordfence.com/threat-intel/vulnerabilities/id/a5cb1fea-134f-4c81-8f2f-76ee42df7f77?source=cve(security@wordfence.com)

IOC Correlations

No correlations recorded

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