AUGUST 25, 2026
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Case File

CVE-2026-3640

MEDIUM · CVSS 5.3 EPSS 0.64%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-19 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. It affects WordPress. Exploitation may require the attacker to be authenticated.

CVE
CVE-2026-3640
Severity
MEDIUM
CVSS
5.3
EPSS
0.64%
WordPress

Original NVD 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.