Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-r
- https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-r
- https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-r
- https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-r
- https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-r
- https://plugins.trac.wordpress.org/browser/flowforms/tags/1.1.1/includes/class-r
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3577870%40flowforms&n
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4e6133-f833-4da2-af4
FAQ
What is CVE-2026-12400?
CVE-2026-12400 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 valida...
How severe is CVE-2026-12400?
CVE-2026-12400 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-12400?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.