WordPressプラグイン「BuddyPress XProfile Custom Image Field」にパストラバーサルの脆弱性（WF-1a53bcf5-61ed-427c-9efd-29c9309d2426）
概要
WordPressプラグイン「BuddyPress XProfile Custom Image Field」にパストラバーサルの脆弱性が確認されました。
バージョン 3.1.0 以前に影響があります。
脆弱性の基本情報
| 脆弱性ID | WF-1a53bcf5-61ed-427c-9efd-29c9309d2426 |
|---|---|
| 脆弱性の種類 | パストラバーサル |
| 危険度 | 重大 |
| CVSSスコア |
9.1（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| 公開日 | 2026年10月13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「BuddyPress XProfile Custom Image Field」 |
3.1.0 以前 | — | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「BuddyPress XProfile Custom Image Field」の提供元が公開している最新情報を確認し、公式の最新版へ更新してください。
情報元の原文
Wordfence Intelligence
BuddyPress XProfile Image Field <= 3.1.0 - Unauthenticated Arbitrary File Deletion via Signup Image Field Activation Handler
The BuddyPress XProfile Image Field plugin for WordPress is vulnerable to arbitrary file deletion in all versions up to, and including, 3.1.0. This is due to bpxp_image_field_update_on_user_activation() calling unlink() on a path built from visitor-supplied signup metadata with no realpath() resolution, no containment check against the profile-image directory and no extension allow-list. Submitting a zero-byte file with the 'field_N_hidden' parameter during registration makes the plugin store the raw value, which is then resolved against the document root when the pending signup is activated. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file (such as wp-config.php) is deleted. Requires open registration and an image-type profile field on the signup form.
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