CVE-2026-45697

9.8 criticalEPSS 0.5%

Critical (9.8). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWEs: CWE-94, CWE-693, CWE-1336
Published: 2026-05-29
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

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

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