Authorization Bypass Vulnerability in n8n Workflow Automation Tool
CVE-2026-118676

5.1MEDIUM

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
28 October 2026

What is CVE-2026-118676?

The n8n workflow automation tool prior to versions 1.123.85, 2.43.5, and 2.44.1 is susceptible to an authorization bypass vulnerability. This flaw allows authenticated users to exploit omitted default node parameters, enabling them to access workflows and credentials they should not be able to. As a result, sensitive credential information may be inadvertently sent to unauthorized destinations. Users should upgrade to the latest versions to mitigate this security risk and ensure data integrity.

Affected Version(s)

n8n 0 < 1.123.85

n8n 2.44.0 < 2.44.1

n8n 2.0.0 < 2.43.5

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-v9...
vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.85-...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Masofgon
.