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CVE-2026-84279— Fancy Product Designer <= 6.5.2 - Unauthenticated Stored Cross-Site Scripting via 'output_format' Parameter via Pro Export Print Job

Quick assessment

Affected
radykal Fancy Product Designer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 Fancy Product Designer 插件存在存储型跨站脚本漏洞（Stored Cross-Site Scripting, XSS），该漏洞存在于所有 6.5.2 及更早版本中，原因是“output_format”参数在处理时缺乏足够的输入清理和输出转义。攻击者无需认证即可在页面中注入任意 Web 脚本，当其他用户访问被植入恶意脚本的页面时，这些脚本便会自动执行。 需要注意的是，该漏洞的利用要求目标站点必须启用“Pro Export/Genius”功能，因为存在漏洞的 AJAX 操作

CVSS 7.2 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1059.001 · PowerShell

Affected Version Matrix 1

VendorProduct Version RangeStatus
radykal Fancy Product Designer ≤ 6.5.2 affected
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I. Basic Information for CVE-2026-84279

Vulnerability Information
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Vulnerability Title
Fancy Product Designer <= 6.5.2 - Unauthenticated Stored Cross-Site Scripting via 'output_format' Parameter via Pro Export Print Job
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
radykal Fancy Product Designer 0 ~ 6.5.2 -

II. Public POCs for CVE-2026-84279

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III. Intelligence Information for CVE-2026-84279

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Vendor Advisories for CVE-2026-84279 (1)

Vendor Pages for CVE-2026-84279 (1)

Same Patch Batch · radykal · 2026-09-25 · 3 CVEs total

CVE-2026-84281 7.2 HIGH Fancy Product Designer <= 6.5.2 - Unauthenticated Stored Cross-Site Scripting via 'product
CVE-2026-84280 7.2 HIGH Fancy Product Designer <= 6.5.2 - Unauthenticated Stored Cross-Site Scripting via Shortcod

IV. Related Vulnerabilities

Same product: Fancy Product Designer
Same vendor: radykal
Same weakness: CWE-79

V. Comments for CVE-2026-84279

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