WordPressプラグイン「Related Posts for WordPress」に認可の欠如の脆弱性（CVE-2026-109980）
概要
WordPressプラグイン「Related Posts for WordPress」に認可の欠如の脆弱性が確認されました。
バージョン 3.0.0 以前に影響があります。
修正版 3.0.1 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-109980 WF-6c197521-6e8d-4cdc-b4a3-0c165ea5ff6a |
|---|---|
| 脆弱性の種類 | 認可の欠如 |
| 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:L/I:N/A:N |
| 公開日 | 2026年10月27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「Related Posts for WordPress」 |
3.0.0 以前 | 3.0.1 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Related Posts for WordPress」を修正版 3.0.1 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
Related Posts for WordPress <= 3.0.0 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Exposure via 'rp4wp_view' Parameter
The Related Posts for WordPress plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.0.0 via the 'rp4wp_view' parameter. This makes it possible for authenticated attackers, with contributor-level access and above, to extract the titles and publication dates of all private posts site-wide, normally restricted to Editor-level users and above. The page's existing authorization check only verifies edit_posts and edit_post on a parent post the attacker owns, both of which any Contributor satisfies, leaving no effective gate against reading other authors' private posts.
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