CVE-2026-45697 PUBLISHED

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

Assigner: GitHub_M
Reserved: 13.05.2026 Published: 29.05.2026 Updated: 29.05.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Product Status

Vendor verbb
Product formie
Versions
  • Version < 2.2.20 is affected
  • Version >= 3.0.0-beta.1, < 3.1.24 is affected

References

Problem Types

  • CWE-94: Improper Control of Generation of Code ('Code Injection') CWE
  • CWE-693: Protection Mechanism Failure CWE
  • CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine CWE