CVE-2026-15665

Description

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.

References

• https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L111
• https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L149
• https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L201
• https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L500
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3609122%40fluent-support&new=3609122%40fluent-support