WordPressプラグイン「Custom Contact Forms」に認可の欠如の脆弱性（CVE-2026-75018）
概要
WordPressプラグイン「Custom Contact Forms」に認可の欠如の脆弱性が確認されました。
バージョン 7.16 以前に影響があります。
修正版 7.16.1 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-75018 WF-9a34ec54-7629-4c14-b5e0-d47f5d3a72ce |
|---|---|
| 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4日 |
| 更新日 | 2026年9月8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「Custom Contact Forms」 |
7.16 以前 | 7.16.1 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Custom Contact Forms」を修正版 7.16.1 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
Custom Contact Forms <= 7.16 - Missing Authorization to Authenticated (Contributor+) Arbitrary Post Deletion and Post Meta Modification via Nested 'fields[].ID' / 'choices[].ID' Parameters
The Custom Contact Forms plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.16. 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 contributor-level access and above, to permanently force-delete arbitrary posts of any post type (including pages, administrator-authored posts, and WooCommerce products) and write arbitrary ccf_field_* post meta onto any post regardless of ownership or post type. The top-level form ID is checked via edit_post/publish_posts, but the nested fields[].ID and choices[].ID paths processed by _create_and_map_fields() and _create_and_map_choices() carry no equivalent capability or post-type guard, leaving those sinks fully exposed while delete_item() and delete_submission() contain explicit post-type restriction fixes demonstrating the developer's awareness of scoping requirements.
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