WordPressプラグイン「Foxtool All-in-One: Contact chat button, Custom login, Media optimize images」に認可の欠如の脆弱性（CVE-2026-18317）
概要
WordPressプラグイン「Foxtool All-in-One: Contact chat button, Custom login, Media optimize images」に認可の欠如の脆弱性が確認されました。
バージョン 2.5.3 以前に影響があります。
修正版 2.5.4 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-18317 WF-10864109-8155-414e-be96-58e4dc2401b1 |
|---|---|
| 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9月17日 |
| 更新日 | 2026年9月18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「Foxtool All-in-One: Contact chat button, Custom login, Media optimize images」 |
2.5.3 以前 | 2.5.4 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Foxtool All-in-One: Contact chat button, Custom login, Media optimize images」を修正版 2.5.4 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
Foxtool All-in-One: Contact chat button, Custom login, Media optimize images <= 2.5.3 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Settings Modification via 'option_key' Parameter of toggle_watermark AJAX Action
The Foxtool All-in-One: Contact chat button, Custom login, Media optimize images plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.5.3. 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 subscriber-level access and above, to modify arbitrary subkeys of the foxtool_settings option, including enabling site-wide SVG uploads by toggling the media-up3 key, which can facilitate stored cross-site scripting via malicious SVG files.
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