CVE-2026-45697

EUVD-2026-33421
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.
Code Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
verbbformie
𝑥
< 2.2.20
CNA
Common Weakness Enumeration
References
https://github.com/verbb/formie/commit/f690d5623163ce2a95da305238d6367575486ee3
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/security/advisories/GHSA-x7m9-mwc2-g6w2