# CVE-2026-12215: WordPress OTP Login Register Woocommerce authentication bypass via OTP brute force

Source: https://junglewise.ai/threats/cve-2026-12215-wordpress-otp-login-register-woocommerce-authentication-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-11. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-12215 · Severity: medium · CVSS 5.3 · Published 2026-09-11

The OTP Login & Register plugin for WordPress, used to secure WooCommerce store logins with one-time passcodes, contains a critical flaw that allows attackers to bypass authentication and gain unauthorized access to any user account, including administrator accounts. An attacker can exploit weak OTP generation and a flawed rate-limiting mechanism to systematically guess valid passcodes within seconds, then authenticate as the targeted user without needing their password.

Technologies: [Xootix OTP Login & Register Woocommerce](https://junglewise.ai/threats/technologies/otp-login-register-woocommerce). Vendors: [Xootix](https://junglewise.ai/threats/vendors/xootix).

## Quick answers

**Is CVE-2026-12215 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-12215 being exploited in the wild.

**How severe is CVE-2026-12215?** Medium severity, with a CVSS score of 5.3, published 11 September 2026.

**Which products and versions are affected?** Xootix OTP Login & Register Woocommerce up to and including 2.7.2.

**Is there a fix for CVE-2026-12215?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-12215 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-12215?** Check whether you run Xootix OTP Login & Register Woocommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin generates OTPs using PHP's non-cryptographic rand() function over a limited keyspace of only 9,000 possible values (1000–9999), combined with a rate-limit counter that is keyed exclusively on an attacker-controlled cookie field, allowing unlimited resets via cookie rotation. Both the OTP issuance endpoint (xoo_ml_login_with_otp) and verification endpoint (xoo_ml_otp_form_submit) are registered as unauthenticated wp_ajax_nopriv actions with no nonce or capability checks. An unauthenticated attacker who knows the target's phone number can trigger OTP issuance, then brute-force the OTP by rotating the cookie to bypass rate limits, and finally call login_user_with_otp() to establish a wp_set_auth_cookie() session. No patch is currently available; the vulnerability affects all versions through 2.7.2.

## Affected products

- Xootix OTP Login & Register Woocommerce up to and including 2.7.2

## Timeline

- 2026-09-11: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-geolocation.php](https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-geolocation.php)
- [https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-otp-handler.php](https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-otp-handler.php)