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CRITICAL9.8

GHSA-x7m9-mwc2-g6w2

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

Quick fix

GHSA-x7m9-mwc2-g6w2 — verbb/formie: upgrade to the fixed version with the command below.

composer require verbb/formie:^3.1.24

Details

### Impact - 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). - Sites with public Formie forms that include at least one Hidden field with that configuration. - No CP login for the reported chain.

### Patches - [2.2.20](https://github.com/verbb/formie/releases/tag/2.2.20), [3.1.24](https://github.com/verbb/formie/releases/tag/3.1.24)

### Workarounds - Temporarily remove Hidden fields from public forms or switch Hidden default away from Custom where feasible - Otherwise, upgrade to patched versions

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/verbb/formie
Introduced in: 3.0.0-beta.1Fixed in: 3.1.24
Fixcomposer require verbb/formie:^3.1.24
Packagist/verbb/formie
Introduced in: 0Fixed in: 2.2.20
Fixcomposer require verbb/formie:^2.2.20

References