WordPressプラグイン「affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display」に危険なファイルのアップロードの脆弱性（CVE-2026-111255）
概要
WordPressプラグイン「affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display」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 3.9.2 以前に影響があります。
修正版 3.9.3 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-111255 WF-272a8ee4-8689-4935-89c5-e2f502621511 |
|---|---|
| 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10月27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「affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display」 |
3.9.2 以前 | 3.9.3 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display」を修正版 3.9.3 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
affiliate-toolkit <= 3.9.2 - Authenticated (Contributor+) Arbitrary File Upload via 'atkp_product_largeimageurl' Parameter
The affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.9.2 via the upload_image function. This is due to insufficient file type validation in upload_image due to a weak Content-Type prefix check and extension derivation from the attacker-controlled URL path, with no dangerous-extension stripping. This makes it possible for authenticated attackers, with contributor-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the "import product image" option to be enabled in the plugin settings, as this activates the image download pipeline triggered on product post save.
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