CVE-2023-2877: STRATEGY11 Formidable Forms

High severity, CVSS 8.8. EPSS: 22.5% chance of exploitation in the next 30 days.

The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.

Affected products

• STRATEGY11 Formidable Forms: before 6.3.1 (fixed in 6.3.1)

Published 2023-06-27. Last modified 2026-06-17.