---
id: CVE-2026-109368
title: >-
  WP Booking System <= 2.1.0.3 - Missing Authorization to Authenticated
  (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor
  AJAX action
summary: >-
  The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to
  Sensitive Information Exposure in all versions up to, and including, 2.1.0.3
  via the 'id' parameter. This makes it possible for authenticated attackers,
  with …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: murgroland
product: WP Booking System – Booking Calendar
affected:
  - wp_booking_system_booking_calendar <= 2.1.0.3
published: '2026-10-17'
updated: '2026-10-17'
sourceUpdated: '2026-10-17T03:43:27.683Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109368'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/164a276a-612f-416f-b9ef-1c2e6dd0e8e4?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/functions-actions-ajax-calendar.php#L12
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/functions-actions-ajax-calendar.php#L62
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/class-calendar-editor-outputter.php#L484
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.2/includes/base/admin/calendar/class-calendar-editor-outputter.php#L432
  - url: >-
      https://plugins.trac.wordpress.org/changeset?old=3730163&old_path=%2Fwp-booking-system%2Ftrunk&new=&new_path=%2Fwp-booking-system%2Ftrunk
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3750120/wp-booking-system/trunk/includes/base/admin/calendar/functions-actions-ajax-calendar.php
tags:
  - cve.org
ingestedAt: '2026-10-17T03:58:44.709Z'
epss: 0.00263
epssPercentile: 0.16987
---

## Overview

The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.0.3 via the 'id' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract private per-event booking descriptions and booking IDs from any calendar managed by the site.

## Affected

- `wp_booking_system_booking_calendar <= 2.1.0.3`

## Remediation

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