What the vulnerability does
01Description
The Bookster – WordPress Appointment Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the ‘raw’ parameter in all versions up to, and including, 2.1.1 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.
Explanation of Vulnerability in Simple Terms
02Summary
Bookster contains a SQL injection vulnerability in versions up to 2.1.1 that allows authenticated administrators to read sensitive data from the database. An attacker with admin privileges can craft malicious input to extract information without modifying or deleting data. This vulnerability requires high-level access and does not affect site availability.
What an attacker can do
03Attacker Capabilities
Read sensitive data from the site's database using SQL injection.
Potential impact on your site
04Site Impact
An admin account compromised or misused could expose your database contents, including user data and configuration details.
Conditions required to exploit
05Prerequisites
Attacker must have administrator-level access to the WordPress site.
Key dates
06Disclosure timeline
February 18, 2026
CVE published
April 8, 2026
Record updated
