What the vulnerability does
01Description
The Gutena Forms – Contact Form, Survey Form, Feedback Form, Booking Form, and Custom Form Builder plugin for WordPress is vulnerable to unauthorized modification of data due to missing authorization within the save_gutena_forms_schema() function in all versions up to, and including, 1.6.0. This makes it possible for authenticated attackers, with Contributor-level access and above, to update option values to a structured array value on the WordPress site. This can be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values, that would, for example enable site user registration when it is explicitly disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Gutena Forms versions up to 1.6.0 lack proper authorization checks, allowing authenticated users to modify form data and settings they should not have access to. An attacker with a low-privilege account can change form configurations, submissions, or other sensitive properties. This affects all form types: contact, survey, feedback, booking, and custom forms. Update to a version newer than 1.6.0.
What an attacker can do
03Attacker Capabilities
Modify form data and settings belonging to other users or forms they don't own.
Potential impact on your site
04Site Impact
Form data integrity compromised; users' form submissions and configurations can be altered by unauthorized accounts.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site; no special user interaction required.
Key dates
06Disclosure timeline
March 4, 2026
CVE published
April 8, 2026
Record updated
