WordPressプラグイン「Printcart Store – Web to Print Product Designer for WooCommerce」に危険なファイルのアップロードの脆弱性（CVE-2026-93388）
概要
WordPressプラグイン「Printcart Store – Web to Print Product Designer for WooCommerce」に危険なファイルのアップロードの脆弱性が確認されました。
バージョン 2.9.1 以前に影響があります。
修正版 2.9.2 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-93388 WF-788461ba-2cf2-49d2-bbaa-a02de15f33ae |
|---|---|
| 脆弱性の種類 | 危険なファイルのアップロード |
| 危険度 | 重大 |
| CVSSスコア |
9.8（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 公開日 | 2026年10月13日 |
| 更新日 | 2026年10月14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「Printcart Store – Web to Print Product Designer for WooCommerce」 |
2.9.1 以前 | 2.9.2 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Printcart Store – Web to Print Product Designer for WooCommerce」を修正版 2.9.2 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
Printcart Store - Web to Print Product Designer for WooCommerce (PCDesigner) <= 2.9.1 - Unauthenticated Arbitrary File Upload to Remote Code Execution via nbdesigner_copy_image_from_url
The Printcart Store (PCDesigner / NB Designer) plugin for WooCommerce is vulnerable to unauthenticated arbitrary file upload leading to remote code execution in all versions up to, and including, 2.9.1 The nbdesigner_copy_image_from_url AJAX action is registered for logged-out callers (wp_ajax_nopriv_), and its Google Drive branch rebuilds the destination filename from the raw, attacker-supplied gapi[name] parameter — bypassing the jpg/jpeg/png/gif allow-list applied on the other branch — and writes the fetched bytes to a web-accessible directory (wp-content/uploads/nbdesigner/temp/). This makes it possible for unauthenticated attackers to write a .php file to a web-served, PHP-executing location and, by supplying their own Google Drive file and OAuth token as the content source, execute arbitrary code on the server. The required save-design nonce is handed to anonymous callers by the nbd_check_use_logged_in endpoint, so it presents no barrier.
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