CVE-2026-93428
Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin に報告された脆弱性
概要
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.
影響を受けるバージョン
- 0以上 〜 2.13.1以下
対処方法
Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin を 2.14.0 以降に更新してください。これで本脆弱性は解消します。
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URLを入力するだけで、実際に使われているプラグインを検出し、 このデータベースと突き合わせて既知の脆弱性が残っていないかを確認できます。登録不要・無料です。
30秒で無料診断する参照
- https://github.com/ultimatemember/ultimatemember/releases/tag/2.14.0
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-ajax-common.php#L61
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-fields.php#L144
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-member-directory.php#L2795
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-member-directory.php#L2839
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/um-actions-profile.php#L1319
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/um-short-functions.php#L1579
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cde81421-e080-4530-87a5-6515f1c9800b?source=cve