STRABL <= 4.5 - Unauthenticated Arbitrary Webhook Creation via REST API Endpoint

Wordfence Intelligence   >   Vulnerability Database   >   STRABL <= 4.5 - Unauthenticated Arbitrary Webhook Creation via REST API Endpoint
5.3
Missing Authorization
CVE CVE-2026-3640
CVSS 5.3 (Medium)
Publicly Published June 18, 2026
Last Updated June 19, 2026
Researcher Teerachai Somprasong

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.

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Vulnerability Details for STRABL – A checkout solution

STRABL – A checkout solution

Software Type Plugin
Software Slug strabl-a-checkout-solution (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.6, or a newer patched version
Affected Version
  • <= 4.5
Patched Version
  • 4.6

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