CVE-2026-84280: Fancy Product Designer <= 6.5.2 - Unauthenticated Stored Cross-Site Scripting via Shortcode Order 'elements[].title' Parameter
The Fancy Product Designer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Order 'elements[].title' Parameter in all versions up to, and including, 6.5.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is written to the DOM via innerHTML within the beforeElementAdd JavaScript event handler when processing the elements[].title field from the stored order JSON, meaning execution occurs specifically when an administrator reviews shortcode orders in the WordPress admin panel.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
WordPress sites using Fancy Product Designer versions up to and including 6.5.2 are affected. An unauthenticated attacker can submit a malicious value through the shortcode order elements[].title field.
When does the injected script execute?
The payload executes when an administrator reviews the affected shortcode order in the WordPress admin panel. The stored order JSON is processed by the beforeElementAdd JavaScript event handler, which writes the title value into the DOM using innerHTML.
What impact should administrators expect?
Successful exploitation allows arbitrary web scripts to run in the context of an administrator reviewing the malicious order. The provided severity vector indicates low confidentiality and integrity impact, with no stated availability impact.