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CVE-2026-119075— Registration Form for WooCommerce <= 1.1.4 - Unauthenticated Privilege Escalation to 'user_roles' Parameter at Checkout

Quick assessment

Affected
themegrill Registration Form for WooCommerce
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 WooCommerce 插件"Registration Form"存在权限提升漏洞，影响版本为 1.1.4 及更早版本。该漏洞源于 FormHandler::validate_checkout_fields() 函数中缺少白名单检查。 在“我的账户”注册路径中，validate_fields() 方法会将提交的 'tgwcfb/user-roles' 值与表单配置的允许角色进行校验；然而，在结账注册路径中，validate_checkout_fields() 方法（通过 woocommerc

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-119075

Vulnerability Information
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Vulnerability Title
Registration Form for WooCommerce <= 1.1.4 - Unauthenticated Privilege Escalation to 'user_roles' Parameter at Checkout
Source: CVE Program / CVE List V5
Vulnerability Description
The Registration Form for WooCommerce plugin for WordPress is vulnerable to privilege escalation due to a missing allow-list check in the FormHandler::validate_checkout_fields() function in versions up to, and including, 1.1.4 The My Account registration path (validate_fields()) validates a submitted 'tgwcfb/user-roles' value against the form's configured allowed roles, but the checkout registration path (validate_checkout_fields(), hooked to woocommerce_after_checkout_validation) stores the raw $_POST['user_roles'] value in $this->valid_data without any allow-list enforcement, and add_user_data() then injects that value into woocommerce_new_customer_data as the new account's role. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator by supplying a user_roles=administrator parameter when creating an account during checkout, resulting in full site takeover.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
themegrill Registration Form for WooCommerce 0 ~ 1.1.4 -

II. Public POCs for CVE-2026-119075

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III. Intelligence Information for CVE-2026-119075

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Other References for CVE-2026-119075 (4)

IV. Related Vulnerabilities

Same product: Registration Form for WooCommerce
Same vendor: themegrill
Same weakness: CWE-269