WordPressプラグイン「Super Forms – Drag & Drop Form Builder」に危険なファイルのアップロードの脆弱性（CVE-2026-17609）
概要
WordPressプラグイン「Super Forms – Drag & Drop Form Builder」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 6.3.316 以前に影響があります。
修正版 6.3.317 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-17609 WF-f21577b4-b7c6-4b39-b2b7-66a75c5f56fb |
|---|---|
| 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 |
9.1（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| 公開日 | 2026年10月7日 |
| 更新日 | 2026年10月8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「Super Forms – Drag & Drop Form Builder」 |
6.3.316 以前 | 6.3.317 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Super Forms – Drag & Drop Form Builder」を修正版 6.3.317 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
Super Forms <= 6.3.316 - Unauthenticated Arbitrary Directory Deletion via 'data[...][files][][subdir]' Parameter
The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary Directory Deletion in all versions up to, and including, 6.3.316 via the submit_form function. This is due to insufficient validation of attacker-controlled JSON field declarations against the actual form schema, combined with a non-effective ABSPATH guard that dirname() trivially bypasses by stripping the trailing slash. This makes it possible for unauthenticated attackers to recursively delete arbitrary directories on the server, including the WordPress root directory. Exploitation requires that an administrator has enabled the 'Delete files from server after form submissions' setting, though this is a documented and commonly-enabled feature.
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