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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-59208 Detail

Description

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacker with a valid token from one trusted issuer and a sub matching a victim under another issuer to authenticate as that victim. This issue is fixed in versions 2.27.4 and 2.28.1.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 7.6 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4 GitHub, Inc. Release Notes 
https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1 GitHub, Inc. Release Notes 
https://github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579w GitHub, Inc. Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-346 Origin Validation Error cwe source acceptance level NIST   GitHub, Inc.  
CWE-287 Improper Authentication GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-59208
NVD Published Date:
07/09/2026
NVD Last Modified:
07/09/2026
Source:
GitHub, Inc.