WordPressプラグイン「AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini」にユーザー制御の鍵による認可回避（IDOR）の脆弱性（CVE-2026-89141）
概要
WordPressプラグイン「AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini」にユーザー制御の鍵による認可回避（IDOR）の脆弱性が確認されました。
バージョン 3.7.7 以前に影響があります。
修正版 3.7.8 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-89141 WF-2cb2ad5d-aa92-4186-aaae-45dde4a52f30 |
|---|---|
| 脆弱性の種類 | ユーザー制御の鍵による認可回避（IDOR） |
| 危険度 | 中 |
| CVSSスコア |
6.5（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| 公開日 | 2026年9月14日 |
| 更新日 | 2026年9月15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「AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini」 |
3.7.7 以前 | 3.7.8 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「AI Engine – MCP Server & AI Chatbot for WordPress, with Claude, ChatGPT & Gemini」を修正版 3.7.8 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
AI Engine <= 3.7.7 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Attachment Disclosure via 'mediaId' Parameter
The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.7 via the 'mediaId' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to access and retrieve the transcribed contents of private audio attachments belonging to other users, including Administrators, via a supplied attachment ID. This vulnerability requires the Public API module to be enabled in the plugin settings; when disabled, the REST route is absent and the endpoint returns HTTP 404.
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