CVE-2026-66690: Nexcess Givewp

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

Unauthenticated Cross Site Scripting (XSS) in GiveWP <= 4.16.5 versions.

Affected products

• Nexcess Givewp: up to and including 4.16.5

Published 2026-08-06. Last modified 2026-08-12.