CVE-2026-56356
Full vulnerability record from the local CVENow database.
Description
n8n contains a stored cross-site scripting vulnerability in the Chat Trigger node's Custom CSS field due to a misconfiguration of the sanitize-html library. Affected releases are those before 1.123.27, the 2.0.0 through 2.13.2 line, and 2.14.0 (fixed in 1.123.27, 2.13.3, and 2.14.1). An authenticated user with permission to create or modify workflows can inject JavaScript that bypasses sanitization, resulting in stored XSS against any user who visits the public chat page.
Severity
MEDIUM
CVSS score
5.1
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-06-30 23:17:30.997000
Last modified
2026-10-29 19:17:22.517000
View original CVE JSON
{
"id": "CVE-2026-56356",
"sourceIdentifier": "[email protected]",
"published": "2026-06-30T23:17:30.997",
"lastModified": "2026-10-29T19:17:22.517",
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}
],
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{
"source": "[email protected]",
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"cvssMetricV31": [
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"weaknesses": [
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"source": "[email protected]",
"type": "Secondary",
"description": [
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"source": "[email protected]",
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}