WordPressプラグイン「Helpdesk Support Ticket System for WooCommerce」にユーザー制御の鍵による認可回避（IDOR）の脆弱性（CVE-2026-11399）
概要
WordPressプラグイン「Helpdesk Support Ticket System for WooCommerce」にユーザー制御の鍵による認可回避（IDOR）の脆弱性が確認されました。
バージョン 2.1.6 以前に影響があります。
修正版 2.2.0 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-11399 WF-0715b5bf-8123-4e75-95e1-4b7d39f37d64 |
|---|---|
| 脆弱性の種類 | ユーザー制御の鍵による認可回避（IDOR） |
| 危険度 | 中 |
| CVSSスコア |
4.3（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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「Helpdesk Support Ticket System for WooCommerce」 |
2.1.6 以前 | 2.2.0 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Helpdesk Support Ticket System for WooCommerce」を修正版 2.2.0 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
Helpdesk Support Ticket System for WooCommerce <= 2.1.6 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary Ticket Response Deletion via 'id' Parameter
The Helpdesk Support Ticket System for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.1.6 via the 'id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary ticket responses belonging to other users by supplying any stsw_responses row ID to the deletion handler after obtaining the nonce from the admin footer.
Copyright 2012-2026 Defiant Inc.
Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.