CVE-2026-45697 CRITICAL

CVE-2026-45697: Formie: Pre-authenticated server-side template injection in Hidden fields

Vendor Verbb
Product formie
Weakness CWE-94 · Code injection
Published May 29, 2026
Last update June 1, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 29, 2026 CVE published
June 1, 2026 Record updated