Jupyter Server: Gateway WebSocket handler bypasses kernel execute authorization

影響: pip:jupyter-server >= 2.0.0, < 2.6.0 → 2.6.0

Jupyter Server's gateway WebSocket handler checks that a user is authenticated, but it does not ask the configured Authorizer whether that user may execute kernels. In Jupyter Server 2.0.0 through 2.5.0, enabling GatewayClient.url automatically replaced the normal kernel channel handler with this gateway-specific handler. An authenticated user who is denied the execute action on the kernels resource can therefore still open a kernel channel and send messages to the upstream kernel. Details The…

GitHub Advisory Databaseで読む

2026/10/23 00:46、GitHub Advisory Databaseが「Jupyter Server: Gateway WebSocket handler bypasses kernel execute authorization」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「重要」(high) です。関連する技術: Python。CVE: CVE-2026-114135。