WordPressプラグイン「Payment forms, Buy now buttons, and Invoicing System | GetPaid」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-111110）
概要
WordPressプラグイン「Payment forms, Buy now buttons, and Invoicing System | GetPaid」にクロスサイトスクリプティング（XSS）の脆弱性が確認されました。
バージョン 2.8.61 以前に影響があります。
修正版 2.8.62 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-111110 WF-2161ecdc-d3c2-4ede-9c42-28f30fa0f91e |
|---|---|
| 脆弱性の種類 | クロスサイトスクリプティング（XSS） |
| 危険度 | 高 |
| CVSSスコア |
7.2（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 公開日 | 2026年10月16日 |
| 更新日 | 2026年10月17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「Payment forms, Buy now buttons, and Invoicing System | GetPaid」 |
2.8.61 以前 | 2.8.62 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Payment forms, Buy now buttons, and Invoicing System | GetPaid」を修正版 2.8.62 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
Payment forms, Buy now buttons, and Invoicing System | GetPaid <= 2.8.61 - Unauthenticated Stored Cross-Site Scripting via 'mmdwqzpoxadd' Parameter
The Payment forms, Buy now buttons, and Invoicing System | GetPaid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'mmdwqzpoxadd' parameter in all versions up to, and including, 2.8.61 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The required nonce (getpaid_form_nonce) is publicly emitted to all visitors via wp_localize_script as WPInv.formNonce, meaning no authentication or prior nonce leak is needed; the stored payload fires when an administrator views the affected invoice's Payment Form Details metabox.
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