What is CVE-2026-84279?

CVE-2026-84279 is a high-severity vulnerability in Radykal Fancy Product Designer, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-25.

How severe is CVE-2026-84279?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Radykal Fancy Product Designer

CVE-2026-84279

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-25 · last modified 2026-09-25.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.7th percentile), scored 2026-09-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Radykal Fancy Product Designer

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-84279?: CVE-2026-84279 is a high-severity vulnerability in Radykal Fancy Product Designer, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-25.
How severe is CVE-2026-84279?: High severity. CVSS v3 base score is 7.2 out of 10.