CVE-2026-87071: Unknown Forminator Forms

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The Forminator Forms WordPress plugin before 1.57.2.1 does not restrict which metadata keys a form submission may supply, and does not exclude the keys WordPress reserves for its own use, so unauthenticated visitors submitting a public form that collects post content can attach metadata of their choosing to the post their submission creates.

Affected products

• Unknown Forminator Forms: before 1.57.2.1 (fixed in 1.57.2.1)

Published 2026-09-23. Last modified 2026-09-23.