WordPressプラグイン「WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels」にパストラバーサルの脆弱性（CVE-2026-18027）
概要
WordPressプラグイン「WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels」にパストラバーサルの脆弱性が確認されました。
バージョン 4.9.8 以前に影響があります。
修正版 5.0.0 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-18027 WF-a46f270f-d9cb-4bc1-8e10-3fc6646e1d78 |
|---|---|
| 脆弱性の種類 | パストラバーサル |
| 危険度 | 中 |
| CVSSスコア |
6.5（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| 公開日 | 2026年8月22日 |
| 更新日 | 2026年8月24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「WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels」 |
4.9.8 以前 | 5.0.0 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels」を修正版 5.0.0 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
WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels <= 4.9.8 - Authenticated (Subscriber+) Arbitrary File Read via 'customer_note' Parameter
The WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 4.9.8 via the get_image_src_in_base64 function. This makes it possible for authenticated attackers, with subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The base64-encoded file contents are embedded into the cached invoice HTML and served directly to the attacker via the plugin's own Print/Download invoice endpoints, which require only a valid nonce and access key.
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