WordPressプラグイン「HashBar – Announcement, Notification Bar & Popup Campaign」にクロスサイトリクエストフォージェリ（CSRF）の脆弱性（CVE-2026-66602）
概要
WordPressプラグイン「HashBar – Announcement, Notification Bar & Popup Campaign」にクロスサイトリクエストフォージェリ（CSRF）の脆弱性が確認されました。
バージョン 2.0.0 以前に影響があります。
修正版 2.0.1 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-66602 WF-88b4791e-8c48-446e-b713-8958d60f668f |
|---|---|
| 脆弱性の種類 | クロスサイトリクエストフォージェリ（CSRF） |
| 危険度 | 中 |
| CVSSスコア |
4.3（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| 公開日 | 2026年8月18日 |
| 更新日 | 2026年8月24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「HashBar – Announcement, Notification Bar & Popup Campaign」 |
2.0.0 以前 | 2.0.1 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「HashBar – Announcement, Notification Bar & Popup Campaign」を修正版 2.0.1 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
HashBar – Announcement, Notification Bar & Popup Campaign <= 2.0.0 - Cross-Site Request Forgery
The HashBar – Announcement, Notification Bar & Popup Campaign plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.0. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to perform an unauthorized action via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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.