WordPressプラグイン「Simple CAPTCHA with Cloudflare Turnstile」にコードインジェクションの脆弱性（CVE-2026-66632）
概要
WordPressプラグイン「Simple CAPTCHA with Cloudflare Turnstile」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 1.42.1 以前に影響があります。
修正版 1.42.3 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-66632 WF-1802a6f2-83d2-4f6d-a64b-0d9f4b4b12f7 |
|---|---|
| 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 |
6.1（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 公開日 | 2026年9月8日 |
| 更新日 | 2026年9月16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「Simple CAPTCHA with Cloudflare Turnstile」 |
1.42.1 以前 | 1.42.3 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Simple CAPTCHA with Cloudflare Turnstile」を修正版 1.42.3 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
Simple CAPTCHA with Cloudflare Turnstile <= 1.42.1 - Unauthenticated Arbitrary Shortcode Execution
The Simple CAPTCHA with Cloudflare Turnstile plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in all versions up to, and including, 1.42.1. This is due to use of do_shortcode() on the wpcf7_form_elements filter, which processes rendered form HTML including user-submitted values reflected back to the visitor. This makes it possible for unauthenticated attackers to inject arbitrary shortcode output into pages containing Contact Form 7 forms by submitting shortcode strings in form fields, which are reflected in the rendered form HTML and then executed via do_shortcode().
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