n8n@1.90.1 vulnerabilities

n8n is a n8n Workflow Automation Tool

Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input that is passed to the handleFormData() function. An attacker can gain unauthorized access to files on the underlying server by requests with unexpected content-type values to exposed webhook listeners. This allows the attacker to make arbitrary file contents available via means such as the chat interface. Sensitive cookie values retrieved can then be used to bypass authentication and further compromise of the application and underlying system.

Note:

For users using the main n8n package it is recommended to upgrade to n8n@1.121.0.

Upgrade n8n to version 1.121.0 or higher.

n8n is a n8n Workflow Automation Tool

Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input that is passed to the handleFormData() function. An attacker can gain unauthorized access to files on the underlying server by requests with unexpected content-type values to exposed endpoints. This allows the attacker to make arbitrary file contents available via the chat interface. Sensitive cookie values retrieved can then be used to bypass authentication and further compromise of the application and underlying system.

Note:

For users using the main n8n package it is recommended to upgrade to n8n@1.121.0.

##Workaround This vulnerability can be mitigated by restricting or disabling publicly accessible webhook and form endpoints.

Upgrade n8n to version 1.121.0 or higher.

n8n is a n8n Workflow Automation Tool

Affected versions of this package are vulnerable to Cross-site Scripting (XSS) via the Respond to Webhook node when it responds with HTML content containing executable scripts. An attacker can execute arbitrary JavaScript in the context of the editor interface by crafting a malicious workflow to bypass the sandbox, leading to unauthorized reading or modification of workflow data, insertion of malicious logic, or exfiltration of sensitive information from within an authenticated session.

n8n-auth session cookies are not exposed by this vulnerability.

Upgrade n8n to version 1.114.0 or higher.

n8n is a n8n Workflow Automation Tool

Affected versions of this package are vulnerable to Command Injection via the Execute Command node. An attacker can execute arbitrary commands on the host system by leveraging access to an authenticated user account, potentially leading to data exfiltration, service disruption, or full system compromise.

Note:

This is only exploitable if the Execute Command node is enabled and not all user accounts are strictly controlled and trusted.

This issue does not impact n8n.cloud.

As per maintainers' memo: "No code changes have been made to alter the behavior of the Execute Command node. The recommended mitigation is to disable the node by default in environments where it is not explicitly required. Future n8n versions may change the default availability of this node."

##Workaround

This vulnerability can be mitigated by disabling the Execute Command node before n8n start using the environment variable: export NODES_EXCLUDE: "[\"n8n-nodes-base.executeCommand\"]".

There is no fixed version for n8n.

n8n is a n8n Workflow Automation Tool

Affected versions of this package are vulnerable to Missing Authorization over the /rest/executions/:id/stop endpoint, which can execute stop a workflow operation on workflows not owned by the user. Long-running and time-sensitive workflows are particularly vulnerable.

Upgrade n8n to version 1.99.1 or higher.