WordPressプラグイン「Enable Media Replace」に認可の欠如の脆弱性（CVE-2026-85655）
概要
WordPressプラグイン「Enable Media Replace」に認可の欠如の脆弱性が確認されました。
バージョン 4.2.2 以前に影響があります。
修正版 4.2.3 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-85655 WF-aff42473-63c6-41ca-8312-058f213e2302 |
|---|---|
| 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:N/I:L/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「Enable Media Replace」 |
4.2.2 以前 | 4.2.3 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Enable Media Replace」を修正版 4.2.3 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
Enable Media Replace <= 4.2.2 - Missing Authorization to Authenticated (Author+) Post Content Modification via Media Replacement Workflow
The Enable Media Replace plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.2.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to modify the post_content of any published post referencing the replaced media — including Administrator-owned posts — making changes immediately visible to unauthenticated visitors. The doReplaceQuery() method performs a database-wide search-and-replace across all posts containing the old media URL without any per-post capability check, meaning a single Author-triggered request can silently overwrite a large number of posts that WordPress's standard admin UI and REST API would otherwise forbid that user from editing.
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