CVE-2026-54806: Melapress Wp Activity Log

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

Unauthenticated PHP Object Injection in WP Activity Log <= 5.6.3.1 versions.

Affected products

• Melapress Wp Activity Log: up to and including 5.6.3.1

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