CVE-2026-103646
Ultimate Multisite – WordPress Multisite SaaS & WaaS Platform に報告された脆弱性
概要
The Ultimate Multisite plugin for WordPress is vulnerable to Account Takeover in all versions up to, and including, 2.16.0. This is due to missing email normalization before the duplicate-account lookup combined with the absence of a require_new_user guard, allowing a submitted email to be matched to and linked with an existing WordPress user account without authentication. This makes it possible for unauthenticated attackers to log in as any existing WordPress user, including a Network Super Admin, by submitting their known email address through a passwordless checkout form and having the plugin link the unauthenticated checkout session to that existing account. A checkout form must be configured without a password field (auto-generated password mode), and the targeted WordPress account must have no existing customer record in the plugin.
影響を受けるバージョン
- 2.16.0 以下
対処方法
Ultimate Multisite – WordPress Multisite SaaS & WaaS Platform を 2.17.0 以降に更新してください。これで本脆弱性は解消します。
Ultimate Multisite – WordPress Multisite SaaS & WaaS Platform の他の脆弱性を見る →
あなたのサイトは大丈夫ですか？
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