CVE-2025-54940: Wpengine, Inc Advanced Custom Fields

Medium severity, CVSS 4.6. EPSS: 0.2% chance of exploitation in the next 30 days.

An HTML injection vulnerability exists in WordPress plugin "Advanced Custom Fields" prior to 6.4.3. If this vulnerability is exploited, crafted HTML code may be rendered and page display may be tampered.

Affected products

• Wpengine, Inc Advanced Custom Fields: before 6.4.3 (fixed in 6.4.3)

Published 2025-08-08. Last modified 2026-06-17.