Executive brief
Formie is a form-building plugin for the Craft CMS platform. A missing authorization check in the notification resend feature allows any authenticated control panel user to read full email content and submitted form data (including personally identifiable information) from notifications they shouldn't have access to, bypassing permission controls designed to restrict this access.
Technical details
The vulnerability is a missing authorization check (CWE-862, CWE-639) in the SentNotificationsController::actionGetResendModalContent control panel action. The action loads a SentNotification object by request ID without performing any object-level authorization checks, only verifying that the request accepts JSON. Any authenticated user can enumerate notification IDs and retrieve full email content including recipient headers and HTML body containing submitted form data. The attack requires network access to the Craft control panel and authentication credentials, but no special privileges. The fix adds canView() authorization checks (Craft 5) or formie-viewSentNotifications permission requirement (Craft 4). Patches are available in versions 3.1.31 (Craft 5) and 2.2.23 (Craft 4).
Affected products
- Verbb Formie 3.0.0 to 3.1.30 (Craft 5); all versions before 2.2.23 (Craft 4)
Timeline
- 2026-09-23: disclosed: Published to GitHub Advisory Database
- 2026-09: patched: Fixed in Formie 3.1.31 (Craft 5) and 2.2.23 (Craft 4)