WordPressプラグイン「Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce」に認可の欠如の脆弱性（CVE-2026-12956）
概要
WordPressプラグイン「Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce」に認可の欠如の脆弱性が確認されました。
バージョン 4.1.22 以前に影響があります。
修正版 4.1.23 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-12956 WF-5e87a9ac-e7c6-4622-b3e5-6e17e7664317 |
|---|---|
| 脆弱性の種類 | 認可の欠如 |
| 危険度 | 中 |
| CVSSスコア |
5.3（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| 公開日 | 2026年9月8日 |
| 更新日 | 2026年9月9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「Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce」 |
4.1.22 以前 | 4.1.23 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce」を修正版 4.1.23 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
Eventin <= 4.1.22 - Missing Authorization to Unauthenticated Arbitrary Order Creation and Status Manipulation via 'status' Parameter
The WP Event Solution (Eventin) plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 4.1.22 via the create_item() handler for the /wp-json/eventin/v2/orders REST endpoint. The endpoint's create_item_permissions_check() function only verifies a wp_rest nonce (which is leaked to every visitor through the etn-public script's localized_data_obj on every frontend page) and accepts a user-supplied 'status' value in prepare_item_for_database() with no whitelist validation. This makes it possible for unauthenticated attackers to create etn-order posts with status='completed' that are counted as sold by etn_get_sold_tickets_by_event(); because the auto-cleanup wp_schedule_single_event() in create_item() only fires for status='pending' orders, the forged completed orders persist indefinitely and exhaust ticket inventory.
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