WordPressプラグイン「Checkout Custom Fields Builder for WooCommerce」に認可の欠如の脆弱性（CVE-2026-19802）
概要
WordPressプラグイン「Checkout Custom Fields Builder 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 1.1.5 以前に影響があります。
修正版 1.1.6 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-19802 WF-6d780de5-d333-4af9-b9d8-0d6c8254dd05 |
|---|---|
| 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8日 |
| 更新日 | 2026年9月9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「Checkout Custom Fields Builder for WooCommerce」 |
1.1.5 以前 | 1.1.6 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Checkout Custom Fields Builder for WooCommerce」を修正版 1.1.6 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
Checkout Custom Fields Builder for WooCommerce <= 1.1.5 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation via 'plugin' Parameter
The Checkout Custom Fields Builder for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to install and activate an arbitrary attacker-hosted plugin, resulting in remote code execution on the server. The required nonce is emitted inline on all admin pages accessible to subscribers when WooCommerce is inactive, meaning any subscriber-level user can harvest it and trigger the exploit without any additional privileges.
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