---
id: CVE-2026-84279
title: >-
  The Fancy Product Designer plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the 'output_format' parameter in all versions up to,
  and including, 6.5.2 due to insufficient input sanitization and output
  escaping
summary: >-
  The Fancy Product Designer plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the 'output_format' parameter in all versions up to,
  and including, 6.5.2 due to insufficient input sanitization and output
  escaping. This m…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: radykal
product: Fancy Product Designer
affected:
  - fancy_product_designer <= 6.5.2
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T14:17:19.540'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84279'
references:
  - url: 'https://fancyproductdesigner.com/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/aa9e0489-effd-4235-a6a9-2bece0fe2abf?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.0019
epssPercentile: 0.07702
ingestedAt: '2026-09-25T07:01:12.110Z'
---

## Overview

The Fancy Product Designer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'output_format' 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. This requires the Pro Export/Genius feature to be enabled on the site, as the vulnerable fpd_pr_export AJAX action is only registered when that feature is active.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.