CVE-2026-86073

n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.1, the OAuth token endpoint bound an authorization code's first access token to the consented resource but did not bind its refresh token. Refreshing checked only that the requested resource was registered, not that it matched the original grant. An OAuth client approved for one workflow could substitute a different workflow URL in the resource parameter and obtain a valid token for an unapproved workflow accessible to the consenting user. This issue is fixed in versions 2.37.7 and 2.38.1.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/n8n-io/n8n/commit/18458482861097a26f874f30ad7e8136e268475c	Patch
https://github.com/n8n-io/n8n/commit/380788fd9a3264c83161e868026a98731d274d88	Patch
https://github.com/n8n-io/n8n/pull/37122	Issue Tracking
https://github.com/n8n-io/n8n/pull/37588	Issue Tracking
https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7	Release Notes
https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.1	Release Notes
https://github.com/n8n-io/n8n/security/advisories/GHSA-cw9w-vv67-hf73	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:n8n:n8n::::::node.js::*
	cpe:2.3:a:n8n:n8n:2.38.0:::::node.js::

History

No history.

Information

Published : 2026-09-08 17:18

Updated : 2026-09-11 18:07

NVD link : CVE-2026-86073

Mitre link : CVE-2026-86073

CVE.ORG link : CVE-2026-86073

JSON object : View

Products Affected

n8n

n8n

CWE

CWE-863

Incorrect Authorization

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