WordPressプラグイン「Contact Form by Supsystic – Drag & Drop Form Builder with Templates & Form Statistics」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-83625）
概要
WordPressプラグイン「Contact Form by Supsystic – Drag & Drop Form Builder with Templates & Form Statistics」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 1.10.2 以前に影響があります。
修正版 1.10.3 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-83625 WF-aa65bced-a449-4ba5-accf-40a824ee464d |
|---|---|
| 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9月4日 |
| 更新日 | 2026年9月5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「Contact Form by Supsystic – Drag & Drop Form Builder with Templates & Form Statistics」 |
1.10.2 以前 | 1.10.3 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Contact Form by Supsystic – Drag & Drop Form Builder with Templates & Form Statistics」を修正版 1.10.3 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
Contact Form by Supsystic <= 1.10.2 - Unauthenticated Stored Cross-Site Scripting via IP Address Header
The Contact Form by Supsystic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via IP Address Header in all versions up to, and including, 1.10.2 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. An unauthenticated attacker can first call the 'updateNonce' action — which is accessible without authentication due to its absence from the plugin's permission list — to obtain a valid nonce, then submit a contact form with a malicious payload in a spoofed IP header such as X-Forwarded-For.
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