WordPressプラグイン「WP Ultimate Review」にリソースの過剰消費の脆弱性（CVE-2026-101161）
概要
WordPressプラグイン「WP Ultimate Review」にリソースの過剰消費の脆弱性が確認されました。
バージョン 2.4.3 以前に影響があります。
修正版 2.4.4 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-101161 WF-dbcef623-7558-4955-844b-dcb1a4dd8aeb |
|---|---|
| 脆弱性の種類 | リソースの過剰消費 |
| 危険度 | 中 |
| CVSSスコア |
5.3（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| 公開日 | 2026年10月1日 |
| 更新日 | 2026年10月9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「WP Ultimate Review」 |
2.4.3 以前 | 2.4.4 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「WP Ultimate Review」を修正版 2.4.4 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
Ultimate Review <= 2.4.3 - Unauthenticated Persistent Page Denial of Service
The Ultimate Review plugin for WordPress is vulnerable to Denial of Service in all versions up to, and including, 2.4.3. This is due to missing isset() guard on the review_location key of the display settings option, which is an empty string when never saved, causing a fatal PHP error when accessed as an array in the shortcode and content-filter handlers. This makes it possible for unauthenticated attackers to cause a persistent denial of service on any reviewed page by submitting a review when the plugin's display settings have never been saved, triggering a fatal PHP error on every subsequent visit to that page. The WP Ultimate Review display settings must have never been saved (fresh install with no settings configuration), leaving the xs_review_display option unset.
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