---
id: CVE-2026-12215
title: >-
  The OTP Login & Register Woocommerce plugin for WordPress is vulnerable to
  Authentication Bypass via OTP Brute Force in all versions up to, and
  including, 2.7.2
summary: >-
  The OTP Login & Register Woocommerce plugin for WordPress is vulnerable to
  Authentication Bypass via OTP Brute Force in all versions up to, and
  including, 2.7.2. The vulnerability exists because the OTP rate-limit attempt
  counter in `pro…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-434
vendor: xootix
product: OTP Login & Register Woocommerce
affected:
  - otp_login_register_woocommerce <= 2.7.2
published: '2026-09-11'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T14:17:25.320'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12215'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-geolocation.php#L24
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-otp-handler.php#L155
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-otp-handler.php#L24
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-verification.php#L472
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xoo-ml-verification.php#L84
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3639216%40mobile-login-woocommerce%2Ftrunk%2Fincludes%2Fclass-xoo-ml-otp-handler.php&old=3419316%40mobile-login-woocommerce%2Ftrunk%2Fincludes%2Fclass-xoo-ml-otp-handler.php&sfp_email=&sfph_mail=
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/4bd4b379-6d7d-4cfe-bb16-a931c5d68d02?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T13:09:22.330389Z'
epss: 0.00321
epssPercentile: 0.22555
ingestedAt: '2026-09-11T11:32:42.776Z'
---

## Overview

The OTP Login & Register Woocommerce plugin for WordPress is vulnerable to Authentication Bypass via OTP Brute Force in all versions up to, and including, 2.7.2. The vulnerability exists because the OTP rate-limit attempt counter in `process_otp_form` is keyed exclusively on the attacker-controlled `xoo_ml_user_ip_data` cookie's `ip_address` field, allowing unlimited counter resets by simply rotating the cookie, while the OTP itself is generated with PHP's non-cryptographic `rand()` function over a default space of only 9,000 possible values (1000–9999), and 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. This makes it possible for unauthenticated attackers to brute-force the OTP for any registered account and obtain a full WordPress authentication session — including for administrator accounts — via `wp_set_auth_cookie()` in `login_user_with_otp()`. Exploitation requires the attacker to know the target user's registered phone number, which is used to trigger OTP issuance via the unauthenticated `xoo_ml_login_with_otp` endpoint.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.