WordPressプラグイン「LearnDash LMS」に危険なファイルのアップロードの脆弱性（CVE-2026-12483）
概要
WordPressプラグイン「LearnDash LMS」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 5.1.5 以前に影響があります。
修正版 5.1.5.1 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-12483 WF-a539ba27-ad9b-4fe6-8df4-71e262c7b158 |
|---|---|
| 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 |
7.5（CVSS v3.1） CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 公開日 | 2026年9月3日 |
| 更新日 | 2026年9月4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「LearnDash LMS」 |
5.1.5 以前 | 5.1.5.1 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「LearnDash LMS」を修正版 5.1.5.1 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
LearnDash LMS <= 5.1.5 - Authenticated (Subscriber+) Arbitrary File Upload via Assignment Upload Handler
The LearnDash LMS plugin for WordPress is vulnerable to Unrestricted File Type Upload in versions up to and including 5.1.5. This is due to insufficient input validation in the 'learndash_fileupload_process' function, which iterates through an entire array and validates only the first file. This makes it possible for authenticated attackers, with subscriber-level access and above who are enrolled in a course with assignment uploads enabled, to upload arbitrary disallowed files, including PHP files, to the server's wp-content/uploads/learndash/assignments/ directory. The uploaded files can only be used for Remote Code Execution if default server configurations have been changed to allow for execution.
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