n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.

n8n's Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay

Уязвимость платформы для автоматизации рабочих процессов N8n, связанная с недостатками процедуры авторизации, позволяющая нарушителю повторно использовать внешний ключ API и получить несанкционированный доступ к защищаемой информации