Junglewise Threat Intelligence

CVE-2026-15665: WPManageNinja Fluent Support Stored XSS in redirect-to shortcode

CVE-2026-15665 · Severity: medium · CVSS 6.4 · Published 2026-07-24

Technologies: WPManageNinja Fluent Support – Helpdesk & Customer Support Ticket System. Vendors: WPManageNinja.

Executive brief

The Fluent Support plugin for WordPress, which provides helpdesk and customer support ticketing functionality, contains a security flaw in its shortcode handling. This vulnerability allows users with contributor-level access or higher to inject malicious scripts into website pages. While the script is hidden and difficult to trigger, a successful exploit could allow an attacker to perform unauthorized actions in the context of another user's browser session.

Technical details

The Fluent Support plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'redirect-to' attribute within its shortcodes. Authenticated attackers with contributor-level permissions or higher can inject arbitrary web scripts into pages. The vulnerability is rooted in AuthHandler.php where user-supplied input is not properly neutralized before being rendered. Although the payload is stored in a hidden attribute—making execution dependent on specific browser behaviors or access keys—it remains a security risk that could lead to session hijacking or unauthorized data access. A patch was introduced in versions following 2.3.0.

Affected products

  • WPManageNinja Fluent Support – Helpdesk & Customer Support Ticket System up to, and including, 2.3.0

Timeline

  • 2026-07-24: disclosed: CVE published by Wordfence/NVD

References