---
id: CVE-2026-118648
title: >-
  n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses
  Missing Sandbox Policy
summary: >-
  n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a
  stored cross-site scripting vulnerability because some webhook response paths,
  such as error responses and responses without headers, omit the sandbox
  Content-Se…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: n8n-io
product: n8n
affected:
  - n8n < 1.123.85
  - n8n >= 2.44.0 < 2.44.1
  - n8n >= 2.0.0 < 2.43.5
published: '2026-10-28'
updated: '2026-10-28'
sourceUpdated: '2026-10-28T18:59:46.959Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118648'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-mp7q-23hg-35cf'
    label: GitHub Security Advisory (GHSA-mp7q-23hg-35cf)
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-stored-xss-via-webhook-responses-missing-sandbox-policy
    label: >-
      VulnCheck Advisory: n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via
      Webhook Responses Missing Sandbox Policy
tags:
  - cve.org
epss: 0.00259
epssPercentile: 0.17605
ingestedAt: '2026-10-29T15:37:07.543Z'
---

## Overview

n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy. Authenticated members who can create and activate workflows can serve HTML that runs on the n8n origin, letting scripts act with the session of users who open the webhook URL.

## Affected

- `n8n < 1.123.85`
- `n8n >= 2.44.0 < 2.44.1`
- `n8n >= 2.0.0 < 2.43.5`

## Remediation

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