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TI-2026-33470 Aliases CVE-2026-45732GHSA-6h4j-wcr9-2vg7

n8n: Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints

Priority LOW 36CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, the OAuth1 and OAuth2 credential reconnect endpoints authorized access using credential:read rather than credential:update. An authenticated user with read-only access to a shared credential could initiate an OAuth reconnect flow and overwrite the stored token material for that credential with tokens bound to an external account they control. Workflows relying on the affected credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of shared integrations. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0035 28th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.43, 2.20.7, 2.21.1n8n (npm): 1.123.43, 2.21.1, 2.20.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
n8nn8nbefore 1.123.43; 2.0.0-rc.0 to before 2.20.7; 2.21.0 to before 2.21.11.123.43, 2.20.7, 2.21.1Patch availableCNA
—n8n (npm)before 1.123.431.123.43Patch availableGHSA-6h4j-wcr9-2vg7
—n8n (npm)2.21.0 to before 2.21.12.21.1Patch availableGHSA-6h4j-wcr9-2vg7
—n8n (npm)2.0.0-rc.0 to before 2.20.72.20.7Patch availableGHSA-6h4j-wcr9-2vg7
  • n8n Vendorn8n Affected before 1.123.43; 2.0.0-rc.0 to before 2.20.7; 2.21.0 to before 2.21.1 Fixed in 1.123.43, 2.20.7, 2.21.1 Patch available CNA
  • n8n (npm) Vendor— Affected before 1.123.43 Fixed in 1.123.43 Patch available GHSA-6h4j-wcr9-2vg7
  • n8n (npm) Vendor— Affected 2.21.0 to before 2.21.1 Fixed in 2.21.1 Patch available GHSA-6h4j-wcr9-2vg7
  • n8n (npm) Vendor— Affected 2.0.0-rc.0 to before 2.20.7 Fixed in 2.20.7 Patch available GHSA-6h4j-wcr9-2vg7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*before 1.123.43; 2.0.0 to before 2.20.7; 2.21.0 to before 2.22.1Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* Versions before 1.123.43; 2.0.0 to before 2.20.7; 2.21.0 to before 2.22.1 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n-io) Fixed in 1.123.43, 2.20.7, 2.21.1
  • Fix · GHSA-6h4j-wcr9-2vg7 n8n (npm) Fixed in 1.123.43 Advisory →
  • Fix · GHSA-6h4j-wcr9-2vg7 n8n (npm) Fixed in 2.21.1 Advisory →
  • Fix · GHSA-6h4j-wcr9-2vg7 n8n (npm) Fixed in 2.20.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45732
  2. 2026-10-03 Alias added: GHSA-6h4j-wcr9-2vg7

References

Advisory 2

Other 1

  • TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
  • TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
  • TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
  • TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
  • TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8
See all 178 →

Sources

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