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CVE PROGRAM SOURCE RECORD7.0 High

CVE-2026-110847

n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Chat Trigger customCss Parameter

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

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.

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 < 1.123.83affected
  • 2.0.0 to < 2.41.4affected
  • 2.42.0 to < 2.42.1affected
pkg:npm/n8n

References