CVE-2026-39545: Select-Themes Zermatt

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

Unauthenticated PHP Object Injection in Zermatt <= 1.6.1 versions.

Affected products

• Select-Themes Zermatt: up to and including 1.6.1

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