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CVE-2026-59208

n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

Published: Jul 9, 2026Updated: Jul 14, 2026 Sources: CVE List NVDCWE-287
6.8MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 96.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-287CWE-346

Affected Products

n8n-io
commercial·DEaka n8n
n8nOn-premWeb App
Cloud & SaaS / container-orchestration
n8n
oss-project
n8nSaaSWeb App
Cloud & SaaS / saas-application

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579w
github.com
https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4
github.com
https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1
github.com
News mentions
1

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