n8n: Credential Permission Check Skips Inline Sub-Workflow Nodes With a Non-Boolean Disabled Value

Impact

Before a workflow runs, n8n checks that the user may use each credential its nodes reference. The check and the execution engine decided in different ways whether a node is disabled, so a node inside an inline sub-workflow could be skipped by the check and still run. A member who knows the id of a credential they have no access to can run such a node and send the decrypted credential to a server they control.

Patches

The issue has been fixed in n8n versions 1.123.85, 2.43.5, and 2.44.1. Users should upgrade to one of these versions or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

• Restrict n8n instance access to fully trusted users only.
• Audit execution logs for unexpected successful executions of Execute Workflow nodes using inline JSON mode.
• Remove member access from any users who are not fully trusted until the instance is patched.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.