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CVE-2026-1305— Japanized for WooCommerce <= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation

Quick assessment

Affected
shoheitanaka Japanized for WooCommerce
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Japanized for WooCommerce 2.8.4及之前版本存在授权问题漏洞，该漏洞源于权限检查存在缺陷，可能导致未经身份验证的攻击者绕过支付验证并欺诈性地标记订单。

CVSS 5.3 · Medium EPSS 0.41% · P33
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I. Basic Information for CVE-2026-1305

Vulnerability Information
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Vulnerability Title
Japanized for WooCommerce <= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Japanized for WooCommerce 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Japanized for WooCommerce 2.8.4及之前版本存在授权问题漏洞，该漏洞源于权限检查存在缺陷，可能导致未经身份验证的攻击者绕过支付验证并欺诈性地标记订单。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
shoheitanaka Japanized for WooCommerce * ~ 2.8.4 -

II. Public POCs for CVE-2026-1305

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III. Intelligence Information for CVE-2026-1305

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Patches & Fixes for CVE-2026-1305 (1)

IV. Related Vulnerabilities

Same product: Japanized for WooCommerce
Same vendor: shoheitanaka
Same weakness: CWE-287

V. Comments for CVE-2026-1305

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