WordPressプラグイン「Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin」に認可の欠如の脆弱性（CVE-2026-93428）
概要
WordPressプラグイン「Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin」に認可の欠如の脆弱性が確認されました。
バージョン 2.13.1 以前に影響があります。
修正版 2.14.0 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-93428 WF-cde81421-e080-4530-87a5-6515f1c9800b |
|---|---|
| 脆弱性の種類 | 認可の欠如 |
| 危険度 | 高 |
| CVSSスコア |
7.5（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 公開日 | 2026年10月2日 |
| 更新日 | 2026年10月3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「Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin」 |
2.13.1 以前 | 2.14.0 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin」を修正版 2.14.0 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
Ultimate Member <= 2.13.1 - Missing Authorization to Unauthenticated Sensitive Profile Field Disclosure via Member Directory Field Privacy Bypass
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.13.1 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to view privacy-restricted member profile field values — including fields explicitly configured as owner-only, members-only, or role-restricted — by querying the publicly accessible wp_ajax_nopriv_um_get_members endpoint. The nonce required by the endpoint ('um-frontend-nonce') is emitted to all unauthenticated visitors via wp_localize_script, meaning it provides no meaningful access control and any anonymous visitor can satisfy the endpoint's authentication requirements.
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