When the Chat Trigger node is configured with n8n User Auth authentication, the authentication check could be circumvented.
The issue has been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. 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:
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
{
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-26T22:45:41Z",
"nvd_published_at": null,
"severity": "MODERATE"
}