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CVE-2026-86073

7.6, high

N8n-io n8n Incorrect Authorization Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.6, high high CVSS v3.1
EPSS, next 30 days
0.4% higher than 31.4% of scored CVEs
Exploitation
No public evidence
Published
8 Sept 2026a month ago

Description

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.

Details

Vendor
N8n-io
Product
n8n
Weakness
CWE-863 (opens in a new tab)
Status
Analyzed
Updated
11 Sept 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L

References 7

Patches and fixes 4

Advisories 1

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other N8n-io CVEs

Every N8n-io CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-86074 N8n-io n8n Server-Side Request Forgery Vulnerability EPSS 0.4% 7.1, high
  • CVE-2026-86075 N8n-io n8n Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.6% 7.5, high
  • CVE-2026-86076 N8n-io n8n Code Injection Vulnerability EPSS 0.8% 8.8, high
  • CVE-2026-86083 N8n-io n8n Code Injection Vulnerability EPSS 0.7% 8.8, high
  • CVE-2026-85165 N8n-io n8n Eval Injection Vulnerability EPSS 0.6% 9.9, critical
  • CVE-2026-85168 N8n-io n8n OS Command Injection Vulnerability EPSS 0.8% 8.8, high
  • CVE-2026-85169 N8n-io n8n Code Injection Vulnerability EPSS 0.9% 8.8, high

Beyond this page

Is CVE-2026-86073 in your network?

This page tells you how dangerous CVE-2026-86073 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.