CVE-2026-94378: SupportCandy <= 3.5.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'name' Parameter
The SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name' parameter in all versions up to, and including, 3.5.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This exploit chain requires the 'Register user if not exists' setting to be disabled, which is its default configuration.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs an authenticated WordPress account with Subscriber-level access or higher. No user interaction is required from the attacker to submit the malicious input.
Is the default configuration affected?
Yes. Exploitation requires the “Register user if not exists” setting to be disabled, and that is the default configuration.
What is the impact after exploitation?
An attacker can store arbitrary web scripts through the name parameter. The scripts execute when another user accesses a page containing the injected content, with potential impact to confidentiality and integrity.
Which versions are affected?
All SupportCandy versions up to and including 3.5.3 are affected.