WordPressプラグイン「User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor」に不適切な権限管理の脆弱性（CVE-2026-115807）
概要
WordPressプラグイン「User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor」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 4.0.3 以前に影響があります。
修正版 4.0.4 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-115807 WF-21931b7b-3c3d-4297-878e-bc0f187557a0 |
|---|---|
| 脆弱性の種類 | 不適切な権限管理 |
| 危険度 | 高 |
| CVSSスコア |
7.1（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N |
| 公開日 | 2026年10月20日 |
| 更新日 | 2026年10月24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「User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor」 |
4.0.3 以前 | 4.0.4 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor」を修正版 4.0.4 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
User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor <= 4.0.3 - Authenticated (Author+) Limited Privilege Escalation via Gutenberg Block 'Assigned Role' Attribute
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Limited Privilege Escalation in all versions up to, and including, 4.0.3. This is due to the Gutenberg Register block passing the attacker-controlled Assigned Role attribute directly into the `[wppb-register]` shortcode without server-side authorization. The role guard in the form builder only downgrades roles that carry the manage_options or remove_users capability, leaving the Editor role and other privileged non-Administrator roles completely unrestricted. This makes it possible for authenticated attackers with Author-level access and above to create new WordPress accounts bearing the Editor role (or any other role that lacks the two guarded capabilities).
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