---
id: CVE-2026-110847
title: >-
  n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a
  stored cross-site scripting vulnerability in the Chat Trigger hosted-chat
  page, where insufficiently sanitised customCss values are interpolated into
  the page as…
summary: >-
  n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a
  stored cross-site scripting vulnerability in the Chat Trigger hosted-chat
  page, where insufficiently sanitised customCss values are interpolated into
  the page as…
severity: none
cwe:
  - CWE-79
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T23:17:25.517'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110847'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-x5cw-hm7v-q7mj'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-stored-xss-via-chat-trigger-customcss-parameter
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-15T00:02:07.177Z'
---

## Overview

n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a stored cross-site scripting vulnerability in the Chat Trigger hosted-chat page, where insufficiently sanitised customCss values are interpolated into the page as markup. Workflow authors can publish a chat without n8n user authentication whose payload executes on the instance origin, acting on the sessions of signed-in visitors.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.