WordPressプラグイン「Klarna for WooCommerce」に認可の欠如の脆弱性（CVE-2026-110590）
概要
WordPressプラグイン「Klarna for WooCommerce」に認可の欠如の脆弱性が確認されました。
バージョン 4.13.3 以前に影響があります。
修正版 4.13.4 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-110590 WF-c3abb96e-6ee2-4992-a122-9f661da9a4d6 |
|---|---|
| 脆弱性の種類 | 認可の欠如 |
| 危険度 | 高 |
| CVSSスコア |
7.5（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 公開日 | 2026年10月15日 |
| 更新日 | 2026年10月16日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| WordPressプラグイン「Klarna for WooCommerce」 |
4.13.3 以前 | 4.13.4 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Klarna for WooCommerce」を修正版 4.13.4 またはそれ以降の公式最新版へ更新してください。
情報元の原文
Wordfence Intelligence
Klarna for WooCommerce <= 4.13.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order-pay' Endpoint
The Klarna for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.13.3 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to access any order's secret order_key and full billing and shipping PII — including first name, last name, email address, phone number, street address, postcode, city, region, and country — emitted inline as the klarna_payments_params JavaScript variable, enabling full store-wide order enumeration. Because WooCommerce order IDs are sequential integers and no order_key or authenticated session is required, every order in the store can be trivially enumerated with sequential GET requests to the order-pay endpoint.
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