# Gutenverse Form – Contact Form Builder, Block Form & Booking Form <= 3.2.1 - Unauthenticated Improper Access Control via Form Submission

- **ID:** WPSEC-2026-2766
- **Plugin:** Gutenverse Form – Contact Form Builder, Block Form & Booking Form (`gutenverse-form`), https://wordpress.org/plugins/gutenverse-form/
- **Affected versions:** all versions before 3.2.2
- **Fixed in:** 3.2.2 (Update to 3.2.2 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **Weakness:** CWE-284
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-10)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/gutenverse-form
- **Fix released:** 2026-11-09
- **Published:** 2026-11-10
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2766/

## Description

The Gutenverse Form – Contact Form Builder, Block Form & Booking Form plugin for WordPress is vulnerable to Improper Access Control via the public form submission REST endpoint in all versions up to, and including, 3.2.1, due to the form context being resolved from a user-supplied post ID without checking post status, readability or password protection, and due to a fallback that builds the field schema from the submitted data when no form block can be resolved. This makes it possible for unauthenticated attackers to submit entries, with fields of their choosing, to forms that are not publicly published, such as forms in draft, private or password-protected content or forms not placed on any page.

## References

- https://wpsec.com/vuln/WPSEC-2026-2766/
- https://plugins.svn.wordpress.org/gutenverse-form/tags/3.2.2/
- https://wordpress.org/plugins/gutenverse-form/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2766/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.