# Registration Form for WooCommerce <= 1.1.3 - Unauthenticated Checkout Registration Field Validation Bypass

- **ID:** WPSEC-2026-2572
- **Plugin:** Registration Form for WooCommerce (`registration-form-for-woocommerce`), https://wordpress.org/plugins/registration-form-for-woocommerce/
- **Affected versions:** all versions before 1.1.4
- **Fixed in:** 1.1.4 (Update to 1.1.4 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-20
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-05)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/registration-form-for-woocommerce
- **Fix released:** 2026-11-04
- **Published:** 2026-11-05
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2572/

## Description

The Registration Form for WooCommerce plugin for WordPress is vulnerable to a validation bypass in checkout registration in all versions up to, and including, 1.1.3. This is due to an inverted condition in the checkout validation routine that skips the plugin's field validation when account creation is mandatory at checkout. This makes it possible for unauthenticated attackers to create customer accounts during checkout without satisfying the required account fields configured in the plugin's checkout registration form, on sites that require an account to check out.

## References

- https://wpsec.com/vuln/WPSEC-2026-2572/
- https://plugins.svn.wordpress.org/registration-form-for-woocommerce/tags/1.1.4/
- https://wordpress.org/plugins/registration-form-for-woocommerce/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2572/

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.