---
id: CVE-2026-103249
title: >-
  n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before
  2.40.1 contain a stored DOM cross-site scripting vulnerability in Resource
  Locator parameter dropdown link handling
summary: >-
  n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before
  2.40.1 contain a stored DOM cross-site scripting vulnerability in Resource
  Locator parameter dropdown link handling. Workflow authors can inject
  malicious scr…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'
cwe:
  - CWE-79
vendor: n8n-io
product: n8n
affected:
  - n8n < 1.123.80
  - n8n >= 2.0.0 < 2.39.6
  - n8n >= 2.40.0 < 2.40.1
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T11:17:18.667'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103249'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-c2wp-6fgc-xjq4'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-stored-dom-xss-via-resource-locator
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T11:42:53.799Z'
---

## Overview

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a stored DOM cross-site scripting vulnerability in Resource Locator parameter dropdown link handling. Workflow authors can inject malicious script URLs that execute arbitrary JavaScript in the editor origin when other users open the node dropdown and click the external-link icon, with the payload persisting across workflow imports and shares.

## Remediation

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