CVE-2026-45697 | Formie is a Craft CMS plugin for creating forms. Prior to 2.… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-45697
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-13 04:38 UTC
Published: 2026-05-29 19:01 UTC
Last updated: 2026-06-01 15:18 UTC
Primary CWE: CWE-94
CWE-94: Improper Control of Generation of Code ('Code Inject…
Vendor / Product: verbb / formie
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
verbb	formie	—	< 2.2.20, >= 3.0.0-beta.1, < 3.1.24

Weakness (CWE)

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

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (4)

https://github.com/verbb/formie/security/advisories/GHSA-x7m9-mwc2-g6w2 https://github.com/verbb/formie/security/advisories/GHSA-x7m9-mwc2-g6w2
https://github.com/verbb/formie/commit/f690d5623163ce2a95da305238d6367575486ee3 https://github.com/verbb/formie/commit/f690d5623163ce2a95da305238d6367575486ee3
https://github.com/verbb/formie/releases/tag/2.2.20 https://github.com/verbb/formie/releases/tag/2.2.20
https://github.com/verbb/formie/releases/tag/3.1.24 https://github.com/verbb/formie/releases/tag/3.1.24