WordPressプラグイン「Easy PayPal & Stripe Buy Now Button」に脆弱性（CVE-2026-90987）
概要
WordPressプラグイン「Easy PayPal & Stripe Buy Now Button」に脆弱性が確認されました。
バージョン 1.8 以上 2.0.5 以下に影響があります。
修正版 2.0.6 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-90987 WF-2eb5e5a9-9bef-41ec-878e-790bd526f24a |
|---|---|
| 脆弱性の種類 | CWE-602 |
| 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28日 |
| 更新日 | 2026年10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「Easy PayPal & Stripe Buy Now Button」 |
1.8 以上 2.0.5 以下 | 2.0.6 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Easy PayPal & Stripe Buy Now Button」を修正版 2.0.6 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
Easy PayPal & Stripe Buy Now Button 1.8 - 2.0.5 - Unauthenticated Arbitrary Payment Amount Reduction
The Easy PayPal & Stripe Buy Now Button plugin for WordPress is vulnerable to Payment Manipulation in versions 1.8 through 2.0.5. This is due to server-side derivation of the payment amount from client-supplied POST fields without verification against the price configured in the saved button or shortcode. This makes it possible for unauthenticated attackers to purchase goods for an arbitrary lower price by supplying a manipulated payment amount in the checkout request.
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