CVE-2026-3640— STRABL <= 4.5 - Unauthenticated Arbitrary Webhook Creation via REST API Endpoint
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| strablengineering | STRABL – A checkout solution | ≤ 4.5 | affected |
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I. Basic Information for CVE-2026-3640
Vulnerability Information
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Vulnerability Title
STRABL <= 4.5 - Unauthenticated Arbitrary Webhook Creation via REST API Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
The STRABL – A checkout solution plugin for WordPress is vulnerable to Missing Authentication in all versions up to and including 4.5. The plugin registers a REST API webhook endpoint at /wp-json/strabl/webhook/order with a permission_callback of __return_true, which allows all incoming requests without any authentication or authorization checks. No shared secret, signature validation, HMAC verification, or token-based authentication is implemented. This makes it possible for unauthenticated attackers to create fraudulent WooCommerce orders and mark them as completed by supplying paymentStatus=paid, manipulate existing order statuses by providing an externalOrderId, create new WordPress user accounts with the customer role, issue refunds on existing orders, cancel existing orders, and apply chargeback fees — all without making a legitimate payment or having any valid credentials.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| strablengineering | STRABL – A checkout solution | 0 ~ 4.5 | - |
II. Public POCs for CVE-2026-3640
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-3640 (8)
Other References for CVE-2026-3640 (2)
Other References for CVE-2026-3640 (1)
IV. Related Vulnerabilities
Same weakness: CWE-862
- CVE-2026-57518
Pagekit CMS 1.0.18 Privilege Escalation via UserApiControlle - CVE-2026-57661
WordPress WPComplete plugin <= 2.9.5.5 - Broken Access Contr - CVE-2026-57660
WordPress Booking and Rental Manager plugin <= 2.7.1 - Broke - CVE-2026-57654
WordPress Affiliates Manager plugin <= 2.9.49 - Broken Acces - CVE-2026-57649
WordPress Shoppable Images Lite plugin <= 1.3 - Broken Acces
V. Comments for CVE-2026-3640
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