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.
Published: 2026-05-29
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-x7m9-mwc2-g6w2 Formie: Pre-authenticated server-side template injection in Hidden fields
History

Fri, 29 May 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Verbb
Verbb formie
Vendors & Products Verbb
Verbb formie

Fri, 29 May 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Formie: Pre-authenticated server-side template injection in Hidden fields
Weaknesses CWE-1336
CWE-693
CWE-94
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-01T15:18:51.317Z

Reserved: 2026-05-13T04:38:01.165Z

Link: CVE-2026-45697

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-05-29T20:16:27.393

Modified: 2026-05-29T20:21:38.773

Link: CVE-2026-45697

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-29T21:00:09Z

Weaknesses