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OFFICIAL CVE RECORD5.1 Medium

CVE-2026-56358

n8n - Stored Cross-Site Scripting in Form Trigger Node

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

n8n before 1.123.25 (1.x) and before 2.11.2 (2.x), with the fix also included in 2.12.0, contains a stored cross-site scripting vulnerability in the Form Trigger node's CSS sanitization that allows authenticated users to inject malicious scripts. Attackers with workflow creation permissions can inject XSS payloads that execute persistently for all form visitors, enabling form hijacking and phishing attacks.

Affected products

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

n8n n8n

Default version status: unaffected

  • 0 to < 1.123.25affected
  • 1.123.25unaffected
  • 2.0.0-rc.0 to < 2.11.2affected
  • 2.11.2unaffected
pkg:npm/n8n

n8n n8n

Default version status: unaffected

  • 2.0.0-rc.0 to < 2.11.2affected
  • 2.11.2unaffected
pkg:npm/n8n

n8n n8n

Default version status: unaffected

  • 0 to < 1.123.25affected
  • 1.123.25unaffected
pkg:npm/n8n

References