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CVE PROGRAM SOURCE RECORD8.4 High

CVE-2026-118648

n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses Missing Sandbox Policy

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n8n-io n8n

Default version status: unaffected

  • 0 to < 1.123.85affected
  • 1.123.85unaffected
pkg:npm/n8n

n8n-io n8n

Default version status: unaffected

  • 2.44.0 to < 2.44.1affected
  • 2.44.1unaffected
pkg:npm/n8n

n8n-io n8n

Default version status: unaffected

  • 2.0.0 to < 2.43.5affected
  • 2.43.5unaffected
pkg:npm/n8n

References