Node.js — CVE-2026-114456

どんな問題か

Multiple Snowflake client drivers implementing the `authenticator=externalbrowser` single sign-on flow could have allowed an attacker to interfere with a user's login attempt through weaknesses in the local loopback callback listener used to receive the identity provider's response. The listener reflected an arbitrary request's Origin header into its CORS response headers and accepted the first token-bearing request it received during the login window without verifying a CSRF state value bound to that specific login attempt. An attacker able to reach the listener during an active login might have leveraged this to submit a forged callback response, causing the authentication attempt to fail. The fix is available in Snowflake Connector for Python 4.8.0, Snowflake Go Driver v2.3.0, Snowflake JDBC Driver 4.4.0 (including the snowflake-jdbc-fips and snowflake-jdbc-thin artifacts), Snowflake Node.js Driver 3.4.0, Snowflake Connector for .NET 6.3.0, Snowflake ODBC Driver 4.0.0, Snowflake PHP PDO Driver 4.3.0, and libsnowflakeclient 2.11.1. Go v1 users must migrate to the latest major version of the module. Users must manually upgrade.

自分のサイトが該当するかの確認手順

1. お使いのサーバー・プログラムに Node.js が使われているか、制作会社・保守会社・サーバー会社に確認します（管理画面やサーバーのバージョン表示でも分かります）。
2. バージョンが「対象バージョン」に当てはまるか確認します。
3. 当てはまる場合は、修正版へのアップデートを依頼します。レンタルサーバーの場合はサーバー会社側で対応済みのこともあるので、お知らせを確認してください。