CVE-2026-118235
SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications に報告された脆弱性
概要
The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.10.2 via the handle_upload function. This is due to missing server-side file key allowlist and pre-sanitization extension derivation that allows a trailing-dot filename to bypass all extension and MIME validation in handle_upload. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. The only access control is a nonce that is printed into every public form's data-nonce attribute, making it trivially obtainable by any unauthenticated visitor on a page embedding the form shortcode.
影響を受けるバージョン
- 0以上 〜 3.10.2以下
対処方法
SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications を 3.11.0 以降に更新してください。これで本脆弱性は解消します。
SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications の他の脆弱性を見る →
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URLを入力するだけで、実際に使われているプラグインを検出し、 このデータベースと突き合わせて既知の脆弱性が残っていないかを確認できます。登録不要・無料です。
30秒で無料診断する参照
- https://plugins.svn.wordpress.org/simple-form/trunk/
- https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L67
- https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L973
- https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L988
- https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L118
- https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L137
- https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L142
- https://plugins.trac.wordpress.org/changeset/3770697/simple-form/trunk/app/FileUpload.php