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CVE-2026-59206

n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration

Published: Jul 9, 2026Updated: Jul 9, 2026 Sources: CVE List NVDCWE-1321
7.1HIGH
NVD MITRE
EPSS Score
0.3%
Top 78.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-1321

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
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Execution
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References

https://github.com/n8n-io/n8n/security/advisories/GHSA-75qm-gp28-rcq9
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

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