Medium severity5.4NVD Advisory· Published Jun 30, 2026· Updated Jul 2, 2026
CVE-2026-56356
CVE-2026-56356
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.
Affected products
1Patches
Vulnerability mechanics
References
2- github.com/n8n-io/n8n/security/advisories/GHSA-3c7f-5hgj-h279nvdMitigationVendor Advisory
- www.vulncheck.com/advisories/n8n-stored-cross-site-scripting-in-chat-trigger-node-custom-css-fieldnvdThird Party Advisory
News mentions
0No linked articles in our index yet.