WordPressプラグイン「All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)」にコードインジェクションの脆弱性（CVE-2026-19856）
概要
WordPressプラグイン「All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)」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 5.0.2.0 以前に影響があります。
修正版 5.0.2.1 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-19856 WF-bf90b42c-28d2-4d37-a027-fb7f0523e096 |
|---|---|
| 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10月2日 |
| 更新日 | 2026年10月8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「All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)」 |
5.0.2.0 以前 | 5.0.2.1 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)」を修正版 5.0.2.1 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
All in One SEO <= 5.0.2.0 - Unauthenticated Arbitrary Shortcode Execution
The All in One SEO plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in all versions up to, and including, 5.0.2.0. This is due to the use of do_shortcode() on user supplied input. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes registered on the site. The impact depends on which shortcodes the site has registered, so a site running a plugin whose shortcodes expose data or perform actions is affected more severely.
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