WordPressプラグイン「Rank Math SEO – AI SEO Tools to Dominate SEO Rankings」に信頼できないデータのデシリアライズの脆弱性（CVE-2026-1928）
概要
WordPressプラグイン「Rank Math SEO – AI SEO Tools to Dominate SEO Rankings」に信頼できないデータのデシリアライズの脆弱性が確認されました。
バージョン 1.0.276 以前に影響があります。
修正版 1.0.277 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-1928 WF-cd4395be-7b4c-46b0-be00-7dedc6691f4a |
|---|---|
| 脆弱性の種類 | 信頼できないデータのデシリアライズ |
| 危険度 | 高 |
| CVSSスコア |
8.8（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 公開日 | 2026年10月27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「Rank Math SEO – AI SEO Tools to Dominate SEO Rankings」 |
1.0.276 以前 | 1.0.277 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Rank Math SEO – AI SEO Tools to Dominate SEO Rankings」を修正版 1.0.277 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
Rank Math SEO <= 1.0.276 - Authenticated (Contributor+) PHP Object Injection to Remote Code Execution
The Rank Math SEO – AI SEO Tools to Dominate SEO Rankings plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.276 via deserialization of untrusted input in the updateMeta REST API endpoint. This makes it possible forauthenticated attackers, with Contributor-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to achieve remote code execution by writing a webshell to the uploads directory.
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