CVE-2026-1305
Received Received - Intake
Improper Authentication in Japanized WooCommerce Enables Order Fraud

Publication date: 2026-02-27

Last updated on: 2026-02-27

Assigner: Wordfence

Description
The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as "Processing" or "Completed" without actual payment via a crafted POST request to the Paidy webhook endpoint.
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Meta Information
Published
2026-02-27
Last Modified
2026-02-27
Generated
2026-06-16
AI Q&A
2026-02-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-1305
EUVD
EUVD-2026-9018
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
woocommerce the_japanized_for_woocommerce_plugin to 2.8.4 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
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Executive Summary

The Japanized for WooCommerce plugin for WordPress has a vulnerability in versions up to and including 2.8.4 caused by improper authentication. Specifically, the function `paidy_webhook_permission_check` has a flawed permission check that always returns true if the webhook signature header is missing. This allows attackers who are not authenticated to bypass payment verification.

As a result, an attacker can send a crafted POST request to the Paidy webhook endpoint and fraudulently mark orders as "Processing" or "Completed" without actually making a payment.

Impact Analysis

This vulnerability can allow unauthorized users to fraudulently mark orders as paid or completed without actual payment. This can lead to financial losses for merchants using the Japanized for WooCommerce plugin, as they may fulfill orders that were never legitimately paid for.

Compliance Impact

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Mitigation Strategies

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