WordPressテーマ「Avada | Website Builder For WordPress & WooCommerce」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-84925）
概要
WordPressテーマ「Avada | Website Builder For WordPress & WooCommerce」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 7.16.1 以前に影響があります。
修正版 7.16.2 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-84925 WF-4c3936aa-58d6-4ac0-a077-2faaed48828f |
|---|---|
| 脆弱性の種類 | クロスサイトスクリプティング（XSS） |
| 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10月1日 |
| 更新日 | 2026年10月2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テーマ「Avada | Website Builder For WordPress & WooCommerce」 |
7.16.1 以前 | 7.16.2 | Wordfence Intelligence |
推奨対応
- WordPressテーマ「Avada | Website Builder For WordPress & WooCommerce」を修正版 7.16.2 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
Avada | Website Builder For WordPress & WooCommerce <= 7.16.1 - Reflected Cross-Site Scripting via 'lang' Parameter
The Avada | Website Builder For WordPress & WooCommerce theme for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'lang' parameter in all versions up to, and including, 7.16.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The injected value is propagated through Fusion_Multilingual::set_active_language() and concatenated into a URL by Fusion_Settings::get_setting_link() without applying urlencode(), esc_url(), or esc_attr() before being echoed raw into a double-quoted href attribute in the post editor metabox.
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