Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress に脆弱性 — CVE-2026-100163
いま何をすべきか
Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress を 5.7.3 以降に更新してください。
影響を受けるバージョン
- 5.7.2 以下のすべて
対象: プラグイン「Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress」(latepoint)
何が起きるのか
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 5.7.2 via the OsCustomerHelper::create_wp_user_for_customer() helper reached from the public process_step_customer() booking step. When the 'Use WordPress users as customers' option is enabled, the helper falls back from email_exists() to username_exists( $customer->email ), which matches any WordPress user whose user_login equals the victim customer's email even when that user's user_email is completely different, and links that WordPress user's ID into the victim's LatePoint customer row (only privileged roles are excluded; Subscriber is allowed). This makes it possible for authenticated attackers, with Subscriber-level access and above, to take over another customer's LatePoint account — accessing their bookings, service, agent, and calendar data, and having the victim customer's email overwritten with the attacker's on next login — by holding a Subscriber account whose user_login equals the victim's email and submitting an unauthenticated public booking step registration request.
ここから先の選択肢
1. 自分たちで対応する
更新の手順、バックアップの取り方、壊れたときの戻し方をまとめています。
2. いまの制作会社・保守業者に頼む
Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress を使っているかどうかを含めて確認を依頼してください。 無料診断を実行すると、そのまま渡せる依頼文を作れます。
3. 相談先がない・自分では難しい
連絡が取れる相手がいない、管理画面に入れない、侵入された疑いがある。 そうした場合はご相談ください。
出典
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/latepoint.php#L1072
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/customer_helper.php#L259
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/customer_helper.php#L274
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/steps_helper.php#L2146
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.2/lib/helpers/steps_helper.php#L2156
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.3/lib/helpers/customer_helper.php