WordPressプラグイン「Drag and Drop File Upload for Elementor Forms」に危険なファイルのアップロードの脆弱性（CVE-2026-18351）
概要
WordPressプラグイン「Drag and Drop File Upload for Elementor Forms」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 1.6.0 以前に影響があります。
修正版 1.6.1 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-18351 WF-03e853be-510f-4957-a227-17ca9f825b12 |
|---|---|
| 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9月9日 |
| 更新日 | 2026年9月10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「Drag and Drop File Upload for Elementor Forms」 |
1.6.0 以前 | 1.6.1 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Drag and Drop File Upload for Elementor Forms」を修正版 1.6.1 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
Drag and Drop File Upload for Elementor Forms <= 1.6.0 - Unauthenticated Arbitrary File Upload via 'type' Parameter
The Drag and Drop File Upload for Elementor Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.6.0 via the elementor_file_upload function. This is due to insufficient file type validation in the is_file_type_valid() function, which uses the attacker-controlled 'type' parameter as regex keys in the MIME allowlist, allowing blacklist bypass via a crafted extension that sanitize_file_name() later normalizes to a PHP extension. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
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