---
id: CVE-2026-96573
title: >-
  The Appointment Hour Booking – Booking Calendar plugin for WordPress is
  vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form
  Single-Line Field via Schedule Calendar List Renderer in all versions up to,
  and including, 1.5.…
summary: >-
  The Appointment Hour Booking – Booking Calendar plugin for WordPress is
  vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form
  Single-Line Field via Schedule Calendar List Renderer in all versions up to,
  and including, 1.5.…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: codepeople
product: Appointment Hour Booking – Booking Calendar
affected:
  - appointment_hour_booking_booking_calendar <= 1.5.97
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T09:17:10.647'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96573'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/classes/cp-base-class.inc.php#L81
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1473
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1609
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/cp-main-class.inc.php#L1745
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.97/mv/js/jquery.calendar.js
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3718725%40appointment-hour-booking&new=3718725%40appointment-hour-booking
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/3044e60f-b930-42db-ba5d-656e71b84226?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T09:41:14.159Z'
---

## Overview

The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer in all versions up to, and including, 1.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the 'list_readmore_numberofwords' Other Parameters setting to be configured with a positive integer value; the default value of 0 bypasses the decode-and-truncate branch entirely and is not exploitable through this sink.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.