CVE-2026-54194 WordPress Fusion Builder plugin <= 3.15.4 - PHP Object Injection vulnerability
Contributors can exploit PHP object injection in Fusion Builder to potentially execute arbitrary code on WordPress sites.
- 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-2026-54194?
CVE-2026-54194 is a critical unsafe deserialization vulnerability in ThemeFusion Fusion Builder, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Contributor PHP Object Injection in Fusion Builder <= 3.15.4 versions.
Weakness: CWE-502
Which versions are affected by CVE-2026-54194?
How do I fix CVE-2026-54194?
No fix has been published for CVE-2026-54194 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-54194 being exploited?
There is no known exploitation of CVE-2026-54194 in the wild and no public exploit code.
Sources
Also known as GHSA-xj9q-5wm7-q8ww.