CVE-2026-76087

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie's anonymous formie/submissions/submit action in SubmissionsController::actionSubmit trusts a client-supplied submissionId when loading an incomplete submission without session binding, ownership validation, or a valid submissionEditToken. An unauthenticated attacker can enumerate sequential IDs and overwrite or hijack another user's in-progress multi-page or save-for-later submission, and the modified data can be persisted and forwarded through notifications or integrations when the submission is completed. This is an incomplete remediation of CVE-2026-47266 because that earlier change validated edit tokens for save-submission but did not protect submit. Completed submissions are excluded by the isIncomplete filter. This issue is fixed in versions 2.2.23 and 3.1.31.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/verbb/formie/commit/323c2fe647a76fbccadf749728ee4ad9420efee1
https://github.com/verbb/formie/commit/78a298ac3baf85ac283988dfce9cd42c9b958f16
https://github.com/verbb/formie/releases/tag/2.2.23
https://github.com/verbb/formie/releases/tag/3.1.31
https://github.com/verbb/formie/security/advisories/GHSA-584p-f93j-wpgc

Configurations

No configuration.

History

23 Sep 2026, 19:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-23 19:19

Updated : 2026-09-30 17:32

NVD link : CVE-2026-76087

Mitre link : CVE-2026-76087

CVE.ORG link : CVE-2026-76087

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-862

Missing Authorization

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