CVE-2026-73378: Supsystic Contact Form By Supsystic

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

Unauthenticated Cross Site Scripting (XSS) in Contact Form by Supsystic < 1.10.0 versions.

Affected products

• Supsystic Contact Form By Supsystic: before 1.10.0 (fixed in 1.10.0)

Published 2026-08-18. Last modified 2026-08-20.