CVE-2023-30777: Advancedcustomfields Advanced Custom Fields

Medium severity, CVSS 6.1. EPSS: 37.9% chance of exploitation in the next 30 days.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.

Affected products

• Advancedcustomfields Advanced Custom Fields: before 6.1.6 (fixed in 6.1.6)

Published 2023-05-10. Last modified 2026-06-17.