WordPressプラグイン「Partial Shipment for WooCommerce」に認可の欠如の脆弱性（CVE-2026-9858）
概要
WordPressプラグイン「Partial Shipment 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 3.4 以前に影響があります。
修正版 3.5 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-9858 WF-d9278c56-b963-4d9b-ae5a-45dab44c701f |
|---|---|
| 脆弱性の種類 | 認可の欠如 |
| 危険度 | 中 |
| CVSSスコア |
4.3（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| 公開日 | 2026年9月18日 |
| 更新日 | 2026年9月21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「Partial Shipment for WooCommerce」 |
3.4 以前 | 3.5 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Partial Shipment for WooCommerce」を修正版 3.5 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
Partial Shipment for Woocommerce <= 3.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Settings Modification via wxp_order_shipment, wxp_order_item_shipment, and wxp_order_set_shipped AJAX Actions
The Partial Shipment for Woocommerce plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 3.4 via the wxp_order_shipment, wxp_order_item_shipment, and wxp_order_set_shipped AJAX actions. This is due to the AJAX handlers in woocommerce-partial-shipment.php (registered at lines 60–62 and implemented at lines 228, 263, and 291) lacking both capability checks and nonce verification, and not validating the calling user's ownership of the supplied order_id. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read arbitrary order item details (names, quantities, shipped counts) belonging to any customer and to modify the shipment status / shipped quantities of any order, which can also trigger order status transitions via the wxp_order_status action.
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