CVE-2026-54194: Themefusion Fusion Builder

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Contributor PHP Object Injection in Fusion Builder <= 3.15.4 versions.

Affected products

• Themefusion Fusion Builder: up to and including 3.15.4

Published 2026-06-17. Last modified 2026-06-17.