WordPressプラグイン「FV Flowplayer Video Player」に危険なファイルのアップロードの脆弱性（CVE-2026-86461）
概要
WordPressプラグイン「FV Flowplayer Video Player」に危険なファイルのアップロードの脆弱性が確認されました。
バージョン 7.5.54.7212 以前に影響があります。
修正版 7.5.55.7212 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-86461 WF-3dacc612-5300-497a-9d6a-0944906e180c |
|---|---|
| 脆弱性の種類 | 危険なファイルのアップロード |
| 危険度 | 高 |
| CVSSスコア |
8.8（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 公開日 | 2026年10月14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「FV Flowplayer Video Player」 |
7.5.54.7212 以前 | 7.5.55.7212 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「FV Flowplayer Video Player」を修正版 7.5.55.7212 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
FV Flowplayer Video Player <= 7.5.54.7212 - Authenticated (Subscriber+) Arbitrary File Upload via 'video_url' Parameter
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Limited Arbitrary File Upload in all versions up to, and including, 7.5.54.7212 via the check_mimetype function. This is due to incomplete file type validation in the check_mimetype function — while some extension checking is present, it can be bypassed, allowing attacker-supplied remote file content to be written with insufficient extension enforcement and no MIME check or WordPress upload helper. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the plugin's 'profile videos on bio' option to be enabled, as this causes the nonce to be emitted on the subscriber-accessible profile page; without this setting, authenticated users below Editor cannot obtain the required nonce.
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