Next-Cart Store to WooCommerce Migration <= 3.9.8 - Unauthenticated Authentication Bypass via Default '__token__' Fallback in REST Migration Endpoint
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().
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Next-Cart Store to WooCommerce Migration | <= 3.9.8 | 3.9.9 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-287- Platform
- WordPress
- Package
Next-Cart Store to WooCommerce Migration- Disclosed
- 08.09.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 739b57d9-8066-4c2a-9419-f6cd9409433c - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Next-Cart Store to WooCommerce Migration
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 12.2024 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 1
Disclosures per year
- 2024: 1
- 2025: 1
- 2026: 1
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Next-Cart Store to WooCommerce Migration <= 3.9.8 - Unauthenticated Authentication Bypass via Default '__token__' Fallback in REST Migration Endpoint this entry
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