CVE-2026-66606: Themegrill Smartsmtp

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Unauthenticated Cross Site Scripting (XSS) in SmartSMTP <= 1.2.0 versions.

Affected products

• Themegrill Smartsmtp: up to and including 1.2.0

Published 2026-08-20. Last modified 2026-08-20.