WordPressプラグイン「Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder」にコードインジェクションの脆弱性（CVE-2026-80437）
概要
WordPressプラグイン「Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder」にコードインジェクションの脆弱性が確認されました。
バージョン 3.14.10 以上 3.15.1 以下に影響があります。
修正版 3.15.2 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-80437 WF-f976f8d6-018e-4a96-b2b3-a18a729e0023 |
|---|---|
| 脆弱性の種類 | コードインジェクション |
| 危険度 | 中 |
| CVSSスコア |
6.5（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| 公開日 | 2026年9月4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「Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder」 |
3.14.10 以上 3.15.1 以下 | 3.15.2 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder」を修正版 3.15.2 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
Ninja Forms – The Contact Form Builder That Grows With You 3.14.10 - 3.15.1 - Unauthenticated Arbitrary Shortcode Execution
The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Remote Code Execution in versions 3.14.10 through 3.15.1. This is due to missing neutralization of shortcode brackets in the system_ip and referer_url merge tag sources in both MergeTags/Other.php and MergeTags/Deprecated.php before their values are processed by do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes registered on the site by supplying crafted bracket sequences in request-derived merge tag values such as the client IP address or referer URL.
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