# Customer Email Verification for WooCommerce <= 2.8.2 - Unauthenticated Email Verification Bypass via Predictable Verification Link

- **ID:** WPSEC-2026-1431
- **Plugin:** Customer Email Verification for WooCommerce (`customer-email-verification-for-woocommerce`), https://wordpress.org/plugins/customer-email-verification-for-woocommerce/
- **Affected versions:** all versions before 2.8.3
- **Fixed in:** 2.8.3 (Update to 2.8.3 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-330
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-22)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/customer-email-verification-for-woocommerce
- **Fix released:** 2026-10-21
- **Published:** 2026-10-22
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1431/

## Description

The Customer Email Verification for WooCommerce plugin for WordPress is vulnerable to Email Verification Bypass via the 'cusomer_email_verify' verification link in all versions up to, and including, 2.8.2, due to the link's secret code being generated from predictable values: an MD5 hash of the recipient email address and the current timestamp for signup verification, or of the user ID and the current timestamp for account verification. Logged-out visitors can trigger the code for any address through the publicly reachable 'resend_otp' and 'check_email_exists' AJAX actions, which use a nonce printed on every front-end page. This makes it possible for unauthenticated attackers to forge a valid verification link for an email address they do not control. They can mark existing accounts as verified, or create a new customer account for that address and be logged into it, without proving they own the email.

## References

- https://wpsec.com/vuln/WPSEC-2026-1431/
- https://plugins.svn.wordpress.org/customer-email-verification-for-woocommerce/tags/2.8.3/
- https://wordpress.org/plugins/customer-email-verification-for-woocommerce/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1431/

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.