CVE-2026-84279 Cross-site scripting in Fancy Product Designer
Unauthenticated attackers can inject arbitrary scripts via the output_format parameter in Fancy Product Designer if Pro Export is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84279?
CVE-2026-84279 is a high-severity cross-site scripting vulnerability in radykal Fancy Product Designer, published on 25 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-84279?
How do I fix CVE-2026-84279?
No fix has been published for CVE-2026-84279 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-84279 being exploited?
There is no known exploitation of CVE-2026-84279 in the wild and no public exploit code.
Sources
Also known as GHSA-83rc-2w53-9qfv.