WordPressプラグイン「Smart Forms – when you need more than just a contact form」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-95816）
概要
WordPressプラグイン「Smart Forms – when you need more than just a contact form」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 2.6.104 以前に影響があります。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-95816 WF-ace194b6-c794-417c-9870-db8ebaa4cf7a |
|---|---|
| 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13日 |
| 更新日 | 2026年10月14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「Smart Forms – when you need more than just a contact form」 |
2.6.104 以前 | — | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Smart Forms – when you need more than just a contact form」の提供元が公開している最新情報を確認し、公式の最新版へ更新してください。
情報元の原文
Wordfence Intelligence
Smart Forms <= 2.6.104 - Unauthenticated Stored Cross-Site Scripting via 'formString' Parameter
The Smart Forms – when you need more than just a contact form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'formString' parameter in all versions up to, and including, 2.6.104 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 nonce check protecting the rednao_smart_forms_save_form_values AJAX handler is only enforced when the smart_forms_block_anonymous_submissions option is enabled, meaning default installations require no authentication or nonce verification whatsoever to submit and store malicious payloads.
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