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Critical · 9.8 CVE-2026-45697 EUVD-2026-33421GHSA-x7m9-mwc2-g6w2

Formie: Pre-authenticated server-side template injection in Hidden fields

Published May 29, 2026 · Updated Jun 1, 2026 · Assigned by GitHub_M

Description

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.20 and 3.1.24, unauthenticated users could submit crafted values into Hidden fields (with Default value → Custom) that were evaluated as Twig during submission handling, which could lead to serious compromise of the Craft site (depending on template/sandbox behavior). This vulnerability is fixed in 2.2.20 and 3.1.24.

Affected products

VendorProductAffectedFixed
verbb formie < 2.2.20, >= 3.0.0-beta.1, < 3.1.24 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist verbb/formie >= 3.0.0-beta.1, < 3.1.24 3.1.24 GHSA-x7m9-mwc2-g6w2
Packagist verbb/formie < 2.2.20 2.2.20 GHSA-x7m9-mwc2-g6w2

References