Is CVE-2026-15665 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-15665?

CVE-2026-15665 has a CVSS v3 severity of MEDIUM (6.4).

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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.