Authentication Bypass in n8n Workflow Automation Platform
CVE-2026-33722

7.3HIGH

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
25 March 2026

What is CVE-2026-33722?

The n8n workflow automation platform had a significant flaw that affected its external secrets management functionality. Prior to versions 2.6.4 and 1.123.23, authenticated users lacking permission to list external secrets could exploit a weakness by referencing a secret using its external name within a credential. This breach allowed them to retrieve the plaintext value of the secret without the necessary permissions, effectively bypassing the intended security controls. It is crucial for organizations using n8n to upgrade to the latest versions to mitigate this vulnerability. Temporary mitigations, such as limiting n8n usage to trusted users and disabling the external secrets feature, can help reduce risk until the update is applied.

Affected Version(s)

n8n < 1.123.23 < 1.123.23

n8n >= 2.0.0-rc.0, < 2.6.4 < 2.0.0-rc.0, 2.6.4

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-fx...
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CVSS V4

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.