WordPressプラグイン「Simply Schedule Appointments」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-104000）
概要
WordPressプラグイン「Simply Schedule Appointments」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 1.6.12.35 以前に影響があります。
修正版 1.6.12.37 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-104000 WF-3a8bd422-112c-43bc-a041-3c6eea27b790 |
|---|---|
| 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15日 |
| 更新日 | 2026年10月16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「Simply Schedule Appointments」 |
1.6.12.35 以前 | 1.6.12.37 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Simply Schedule Appointments」を修正版 1.6.12.37 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
Simply Schedule Appointments <= 1.6.12.35 - Unauthenticated Stored Cross-Site Scripting via 'status' Parameter via /wp-json/ssa/v1/appointments/{id}
The Simply Schedule Appointments plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'status' parameter in all versions up to, and including, 1.6.12.35 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 malicious payload is stored unconditionally because debug logging is enabled by default, and the debug-log viewer is accessible to anyone holding the site-wide Support PIN (an HMAC-MD5 of AUTH_SALT displayed in wp-admin), meaning the injected script will execute against the administrator's session during ordinary support or troubleshooting workflows.
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