CVE-2026-76086: Verbb Formie

High severity, CVSS 8.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie's formie/integrations/form-settings control panel action in IntegrationsController::actionFormSettings is reachable without the required form integration permissions and passes request-supplied settings to a configured integration. An authenticated attacker can replace outbound host properties such as apiUrl while the server uses stored API keys or OAuth tokens, causing non-blind server-side requests to an attacker-controlled or internal host and returning the remote response. This residual flaw remained because the permission gate added in version 3.1.28 excluded the form-settings action. Sites that permit low-privileged or front-end user authentication can therefore expose integration credentials and internal network responses. This issue is fixed in versions 2.2.23 and 3.1.31.

Affected products

• Verbb Formie: before 2.2.23 (fixed in 2.2.23); from 3.0.0, before 3.1.31 (fixed in 3.1.31)

Published 2026-09-23. Last modified 2026-09-30.