What the vulnerability does
01Description
The Fluent Support – Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'redirect-to' Shortcode Attribute in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The XSS payload is in a hidden attribute so it only fires in specific browsers when specific access keys are used making exploitation unlikely.
Explanation of Vulnerability in Simple Terms
02Summary
Fluent Support versions up to 2.3.0 contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning injected code can affect other users or site functionality beyond the vulnerable component. An attacker with low-level access can craft malicious input that executes in other users' browsers, potentially compromising their sessions or data.
What an attacker can do
03Attacker Capabilities
Inject JavaScript that runs in other users' browsers and affects site functionality.
Potential impact on your site
04Site Impact
Authenticated users' sessions and data can be compromised; site functionality may be disrupted for other users.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., customer or agent login) on the site.
Key dates
06Disclosure timeline
July 24, 2026
CVE published
