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Vulnerability DatabaseCVE-2026-21858

CVE-2026-21858: 
n8n vulnerability analysis and mitigation

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker, resulting in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage. This issue is fixed in version 1.121.0.

Source: NVD

Related n8n vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-21858CRITICAL10
  • n8nn8n
  • n8n
NoYesJan 08, 2026
CVE-2026-21877CRITICAL9.9
  • n8nn8n
  • n8n
NoYesJan 08, 2026
CVE-2025-68668CRITICAL9.9
  • NixOSNixOS
  • n8n
NoYesDec 26, 2025
CVE-2026-21894MEDIUM6.5
  • n8nn8n
  • n8n
NoYesJan 08, 2026
CVE-2025-68697MEDIUM5.4
  • NixOSNixOS
  • n8n
NoYesDec 26, 2025

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