What the vulnerability does
01Description
The Booking Calendar plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'dates_to_check' parameter in all versions up to, and including, 10.14.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers 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
Booking Calendar versions up to 10.14.8 contain a SQL injection vulnerability in database query handling. An unauthenticated attacker can craft malicious input to extract sensitive data from the site's database, including user credentials and booking information. No user interaction is required. Update immediately to a version newer than 10.14.8.
What an attacker can do
03Attacker Capabilities
Read sensitive data from the site database, including user credentials and booking records.
Potential impact on your site
04Site Impact
Attackers can steal user data, passwords, and booking information without any warning or user action.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
December 15, 2025
CVE published
April 8, 2026
Record updated
