WordPressプラグイン「Mail logging & Catcher」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-93889）
概要
WordPressプラグイン「Mail logging & Catcher」にクロスサイトスクリプティング（XSS）の脆弱性が確認されました。
バージョン 2.1.12 以前に影響があります。
修正版 2.2.0 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-93889 WF-6a1d9d03-0216-484c-85ca-73f157595713 |
|---|---|
| 脆弱性の種類 | クロスサイトスクリプティング（XSS） |
| 危険度 | 高 |
| CVSSスコア |
7.2（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 公開日 | 2026年10月2日 |
| 更新日 | 2026年10月3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「Mail logging & Catcher」 |
2.1.12 以前 | 2.2.0 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Mail logging & Catcher」を修正版 2.2.0 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
Mail logging <= 2.1.12 - Unauthenticated Stored Cross-Site Scripting via PHPMailer 'wp_mail_failed' Error Message
The Mail logging – WP Mail Catcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via PHPMailer 'wp_mail_failed' Error Message in all versions up to, and including, 2.1.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires a separately installed plugin, such as Contact Form 7, that passes unauthenticated user-controlled input into mail fields whose content PHPMailer will include in its failure error message.
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