CVE-2026-84280
Received Received - Intake

Stored XSS in Fancy Product Designer WordPress Plugin

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-84280
EUVD
EUVD-2026-86576

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
fancy_product_designer fancy_product_designer to 6.5.2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) flaw in the Fancy Product Designer WordPress plugin up to version 6.5.2. It allows unauthenticated attackers to inject malicious scripts via the 'elements[].title' parameter in shortcode orders. The scripts execute when an administrator views these orders in the WordPress admin panel due to insufficient input sanitization and output escaping.

Detection Guidance

Check for the Fancy Product Designer plugin versions up to and including 6.5.2 in your WordPress installation. Review stored shortcode orders in the WordPress admin panel for suspicious JavaScript injections in the elements[].title field. Use WordPress security plugins to scan for unauthorized script executions or DOM manipulations.

Impact Analysis

An attacker could exploit this to inject scripts that steal sensitive data like cookies or session tokens when an admin accesses the infected order page. This could lead to unauthorized account access, data theft, or further compromise of the WordPress site.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Organizations may face compliance breaches if user data is compromised through this exploit.

Mitigation Strategies

Update the Fancy Product Designer plugin to the latest version beyond 6.5.2 immediately. Remove any suspicious shortcode orders or injected scripts from the WordPress admin panel. Implement additional input sanitization and output escaping measures if custom solutions are used.

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