CVE-2026-40733: Mikado-Themes Shiftup

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Unauthenticated PHP Object Injection in ShiftUp <= 1.3 versions.

Affected products

• Mikado-Themes Shiftup: up to and including 1.3

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