n8n-io n8n up to 1.106.x initialMessages cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in n8n-io n8n up to 1.106.x. This vulnerability affects unknown code. Executing a manipulation of the argument initialMessages can lead to cross site scripting. This vulnerability is registered as CVE-2025-58177. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in n8n-io n8n up to 1.106.x. It has been declared as problematic. This vulnerability affects an unknown part. The manipulation of the argument initialMessages with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

n8n is an open source workflow automation platform. From 1.24.0 to before 1.107.0, there is a stored cross-site scripting (XSS) vulnerability in @n8n/n8n-nodes-langchain.chatTrigger. An authorized user can configure the LangChain Chat Trigger node with malicious JavaScript in the initialMessages field and enable public access so that the payload is executed in the browser of any user who visits the resulting public chat URL. This can be used for phishing or to steal cookies or other sensitive data from users accessing the public chat link. The issue is fixed in version 1.107.0. Updating to 1.107.0 or later is recommended. As a workaround, the affected chatTrigger node can be disabled. No other workarounds are known.

The advisory is available at github.com. This vulnerability was named CVE-2025-58177 since 08/27/2025. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 1.107.0 eliminates this vulnerability. Applying the patch d4ef191be0b39b65efa68559a3b8d5dad2e102b2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• n8n-io

Name

• n8n

Version

• 1.106

License

• open-source

Website

• Product: https://github.com/n8n-io/n8n/

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