| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| n8n | ≥ 2.0.0, < 2.11.2< 1.123.25 | 2.11.21.123.25 |
| n8n | ≥ 2.0.0-rc.0, < 2.11.2< 1.123.25 | 2.11.21.123.25 |
An authenticated user with permission to create or modify workflows could exploit a flaw in the Form Trigger node's CSS sanitization to store a cross-site scripting (XSS) payload. The injected script executes persistently for every visitor of the published form, enabling form submission hijacking and phishing. The existing Content Security Policy prevents direct n8n session cookie theft but does not prevent script execution or form action manipulation.
The issue has been fixed in n8n versions 2.12.0, 2.11.2, and 1.123.25. 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:
n8n-nodes-base.formTrigger to the NODES_EXCLUDE environment variable.These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
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