CVE-2026-94539: SupportCandy <= 3.5.3 - Authenticated (Custom+) SQL Injection via 'sort_by' Parameter
The SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent plugin for WordPress is vulnerable to time-based SQL Injection via the 'sortby' parameter in all versions up to, and including, 3.5.3 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 custom-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 authenticated attacker to hold both a Subscriber-level (or higher) WordPress role and a SupportCandy Agent account with the 'Assign Agents' permission configured.
Affected Software
Event History
Frequently Asked Questions
Which users can exploit this issue?
An attacker must be authenticated in WordPress with at least the Subscriber role. They must also have a SupportCandy Agent account configured with the Assign Agents permission.
What could an attacker gain through exploitation?
The SQL injection can be used to extract sensitive information from the WordPress database. The issue affects confidentiality; the provided data does not indicate integrity or availability impact.
Are unauthenticated visitors affected?
No. Exploitation requires an authenticated WordPress user and the specified SupportCandy Agent permission.
Which versions are affected?
SupportCandy versions up to and including 3.5.3 are affected. The provided information does not identify a fixed version.