CVE-2026-81778: THE4 Kalles Addons

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Subscriber Cross Site Scripting (XSS) in Kalles Addons <= 1.0.6 versions.

Affected products

• THE4 Kalles Addons: up to and including 1.0.6

Published 2026-08-31. Last modified 2026-09-01.