CVE-2026-66447: Nickboss WordPress File Upload

Critical severity, CVSS 9.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Unauthenticated SQL Injection in WordPress File Upload <= 5.1.7 versions.

Affected products

• Nickboss WordPress File Upload: up to and including 5.1.7

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