WordPressプラグイン「Mang Board」に不適切な権限管理の脆弱性（CVE-2026-75977）
概要
WordPressプラグイン「Mang Board」に不適切な権限管理の脆弱性が確認されました。
バージョン 2.3.7 以前に影響があります。
修正版 2.3.8 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-75977 WF-ae75196d-2128-4da8-a90b-a62454dcdbe9 |
|---|---|
| 脆弱性の種類 | 不適切な権限管理 |
| 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8月25日 |
| 更新日 | 2026年8月26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「Mang Board」 |
2.3.7 以前 | 2.3.8 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Mang Board」を修正版 2.3.8 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
Mang Board WP <= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie
The Mang Board WP plugin for WordPress is vulnerable to Missing Authorization via Authentication Cookie Forgery in all versions up to, and including, 2.3.7. This is due to flawed HMAC generation in the mbw_get_hash_key() function that uses the current user's identity instead of the cookie username parameter when a WordPress user is logged in, combined with insufficient validation in mbw_validate_auth_cookie(). This makes it possible for authenticated attackers, with subscriber-level access and above, to forge administrator authentication cookies and change administrator passwords to achieve complete site takeover.
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