n8n Vulnerable to Stored XSS via Various Nodes

Summary

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes (Form Trigger node, Chat Trigger node, Send & Wait node, Webhook Node, and Chat Node). Scripts injected by a malicious workflow execute in the browser of any user who visits the affected page, enabling session hijacking and account takeover. The issues have been fixed in n8n versions 2.10.1 and 1.123.21. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or disable the Webhook node by adding `n8n-nodes-base.webhook` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Timeline

1. Feb 25, 2026, 10:40 PM UTCCVE published
2. Feb 26, 2026, 8:16 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Feb 26, 2026, 8:16 PM UTCRecord last updated

Affected versions

• n8n-io n8n

  fixed in 1.123.22; From 2.0.0 · fixed in 2.9.3; From 2.10.0 · fixed in 2.10.1

• n8nnpm

  fixed in 1.123.22

• n8nnpm

  From 2.0.0 · fixed in 2.9.3

• n8nnpm

  From 2.10.0 · fixed in 2.10.1

References 4