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4.9

WP Booking System allows admin data theft

CVE-2026-111178 · published 19 days ago
Summary

The WP Booking System – Booking Calendar plugin for WordPress lets users with admin rights run custom database commands through the 'orderby' field. An attacker who can log in as an administrator could retrieve or change information in your site’s database. Update the plugin to the latest version or remove it if you cannot apply the update.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
murgroland wp booking system – booking calendar <= 2.1.0.1
Original advisory text
WP Booking System <= 2.1.0.1 - Authenticated (Administrator+) SQL Injection via 'orderby' Parameter
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
4.9 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-89SQL Injection
Timeline
Published16 Oct 2026
Updated3 Nov 2026
First seen16 Oct 2026
Sources
CVE-2026-111178 · NVD
CVE-2026-111178 · MITRE
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