CVE-2026-12400
FlowForms <= 1.1.1 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Form Modification via REST API '/flowforms/v1/forms/{id}' Endpoints
CVSS Score
4.3
EPSS Score
0.2%
EPSS Percentile
13th
The FlowForms – Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.1 via the update_form due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to modify the content, design, and settings of, as well as publish or revert, any form on the site — including forms owned by administrators — by supplying an arbitrary form ID in the REST URL.
| CWE | CWE-639 |
| Vendor | priyanshuchaudhary |
| Product | flowforms – conversational form builder |
| Published | Jul 10, 2026 |
| Last Updated | Jul 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
priyanshuchaudhary / FlowForms – Conversational Form Builder
0 ≤ 1.1.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4e6133-f833-4da2-af4a-e7e7fcedfe3c?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L493 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L48 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L562 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L603 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L654 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-rest-api.php#L694 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&old=3577870%40flowforms&new=3577870%40flowforms
Credits
Aliyan Khan