---
id: CVE-2026-111178
title: >-
  The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to
  generic SQL Injection via the 'data[orderby]' parameter in all versions up to,
  and including, 2.1.0.1 due to insufficient escaping on the user supplied
  parame…
summary: >-
  The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to
  generic SQL Injection via the 'data[orderby]' parameter in all versions up to,
  and including, 2.1.0.1 due to insufficient escaping on the user supplied
  parame…
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-89
vendor: murgroland
product: WP Booking System – Booking Calendar
affected:
  - wp_booking_system_booking_calendar <= 2.1.0.1
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:17:13.497'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-111178'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.1/includes/abstracts/abstract-class-object-db.php#L83
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.1/includes/base/admin/booking/class-bookings-outputter.php#L214
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.1/includes/base/admin/booking/functions-actions-booking.php#L219
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-booking-system/tags/2.1.0.1/includes/base/booking/class-object-db-bookings.php#L165
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?old=3732620&old_path=%2Fwp-booking-system%2Ftrunk&new=&new_path=%2Fwp-booking-system%2Ftrunk
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&new=3736389%40wp-booking-system%2Ftags%2F2.1.0.2&old=3732637%40wp-booking-system%2Ftags%2F2.1.0.1
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/12923175-4db4-4afc-9e9b-b9f139f24a79?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00294
epssPercentile: 0.21936
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T14:55:24.939335Z'
ingestedAt: '2026-10-16T07:01:11.482Z'
---

## Overview

The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to generic SQL Injection via the 'data[orderby]' parameter in all versions up to, and including, 2.1.0.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires the targeted calendar to have more than 200 bookings, as the orderby value is only forwarded to the database layer when the AJAX handler takes the use_ajax branch; an Administrator can satisfy this condition by creating bookings directly.

## Remediation

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