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CVE-2026-76009— Next-Cart Store to WooCommerce Migration <= 3.9.8 - Unauthenticated Authentication Bypass via Default '__token__' Fallback in REST Migration Endpoint

Quick assessment

Affected
martinnguyen1990 Next-Cart Store to WooCommerce Migration
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 Next-Cart Store to WooCommerce Migration 插件在所有 3.9.8 及更早版本中，由于 函数存在身份验证绕过漏洞。该漏洞产生的原因是：插件在注册 REST 路由时，将 设置为 ，并在 选项尚未写入数据库时，依赖于 中硬编码的回退值 。 这使得未认证的 attackers 能够通过提供字符串 作为令牌来绕过迁移端点的身份验证，从而访问特权的处理程序。这些处理程序会将攻击者控制的 SQL 直接传递给 和 ，从而实现任意 SQL 执行（包括创建管理员账户）；同

CVSS 8.1 · High
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I. Basic Information for CVE-2026-76009

Vulnerability Information
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Vulnerability Title
Next-Cart Store to WooCommerce Migration <= 3.9.8 - Unauthenticated Authentication Bypass via Default '__token__' Fallback in REST Migration Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The Next-Cart Store to WooCommerce Migration plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 3.9.8 via the `NCWM_Kitconnect::run()` function. This is due to the plugin registering the `/wp-json/next_cart/v1/migration` REST route with `permission_callback` set to `__return_true` and relying on a hardcoded fallback value of `__token__` in `get_option('nextcart_token', '__token__')` when the `nextcart_token` option has not yet been written to the database. This makes it possible for unauthenticated attackers to bypass authentication to the migration endpoint by supplying the literal string `__token__` as the token, gaining access to privileged handlers that pass attacker-controlled SQL directly to `$wpdb->query()` and `$wpdb->get_results()` — enabling arbitrary SQL execution including administrator account creation — and pass an attacker-controlled path to `unlink()`, enabling arbitrary file deletion and full site takeover. The hardcoded fallback is reachable whenever the `nextcart_token` option has not yet been populated, which occurs after WP-CLI, network, or programmatic plugin activation without a subsequent authenticated `wp-admin` visit, as token generation is deferred to `admin_init` via `register_settings()`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
martinnguyen1990 Next-Cart Store to WooCommerce Migration 0 ~ 3.9.8 -

II. Public POCs for CVE-2026-76009

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III. Intelligence Information for CVE-2026-76009

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Patches & Fixes for CVE-2026-76009 (1)

Proof of Concept for CVE-2026-76009 (1)

News Coverage for CVE-2026-76009 (1)

Vendor Pages for CVE-2026-76009 (2)

Other References for CVE-2026-76009 (2)

IV. Related Vulnerabilities

Same product: Next-Cart Store to WooCommerce Migration
Same vendor: martinnguyen1990
Same weakness: CWE-287

V. Comments for CVE-2026-76009

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