Security Flaw in Formie Plugin for Craft CMS Exposes Sites to Attacks
CVE-2026-45697

9.8CRITICAL

Key Information:

Vendor

Verbb

Status
Formie
Vendor
CVE Published:
29 May 2026

What is CVE-2026-45697?

The Formie plugin for Craft CMS has a vulnerability that allows unauthenticated users to manipulate hidden fields, leading to potential Twig template execution during form submissions. This exploitation can compromise the integrity of the Craft site depending on how templates are configured. The issue has been resolved in versions 2.2.20 and 3.1.24. Site administrators are urged to update their installations to mitigate risks associated with this vulnerability.

Affected Version(s)

formie < 2.2.20 < 2.2.20

formie >= 3.0.0-beta.1, < 3.1.24 < 3.0.0-beta.1, 3.1.24

References

https://github.com/verbb/formie/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/verbb/formie/commit/f690d5623163ce2a95...
x_refsource_MISC
https://github.com/verbb/formie/releases/tag/2.2.20
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.