WordPressプラグイン「Post Duplicator」に不適切な認可の脆弱性（CVE-2026-4245）
概要
WordPressプラグイン「Post Duplicator」に不適切な認可の脆弱性が確認されました。
バージョン 3.0.11 以前に影響があります。
修正版 3.0.12 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-4245 WF-bb671c8f-9e14-4f79-adfa-72f48ec02449 |
|---|---|
| 脆弱性の種類 | 不適切な認可 |
| 危険度 | 中 |
| CVSSスコア |
4.3（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| 公開日 | 2026年8月21日 |
| 更新日 | 2026年8月22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「Post Duplicator」 |
3.0.11 以前 | 3.0.12 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Post Duplicator」を修正版 3.0.12 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
Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication
The Post Duplicator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.0.11. This is due to the `duplicate_post_permissions()` permission callback only verifying the `duplicate_posts` capability without checking whether the requesting user holds `publish_posts` or other status-gated capabilities. This makes it possible for authenticated attackers, with Contributor-level access and above, to create duplicate posts with `future` (scheduled, auto-publishes) or `private` status, bypassing editorial review. Additionally, the REST endpoint does not enforce administrator-configured post-type duplication restrictions, allowing duplication of post types that have been explicitly disabled.
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