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TI-2026-46757 Aliases CVE-2026-65594GHSA-q5xf-xhwf-cwqf

n8n before 2.30.1 Missing OAuth Authorization Check

Priority LOW 24CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

n8n before 2.29.8 and 2.30.x before 2.30.1 (affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow was introduced) does not verify that the authenticated user has access to the workflow referenced as the OAuth resource. On instances with at least one active MCP Server Trigger workflow configured with n8n OAuth2 authentication, a member-level user can register an OAuth client, self-approve consent for another user's workflow, and obtain a valid token. The workflow then runs in the owner's project context with the owner's stored credentials, and the attacker can set tool inputs and read outputs (potentially including data from the owner's connected integrations), breaking user and project isolation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0044 38th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 2.30.1, 2.29.8n8n (npm): 2.30.1, 2.29.8

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
n8nn8n2.30.0 to before 2.30.12.30.1Patch availableCNA
n8nn8nbefore 2.29.82.29.8Patch availableCNA
—n8n (npm)2.30.0 to before 2.30.12.30.1Patch availableGHSA-q5xf-xhwf-cwqf
—n8n (npm)before 2.29.82.29.8Patch availableGHSA-q5xf-xhwf-cwqf
  • n8n Vendorn8n Affected 2.30.0 to before 2.30.1 Fixed in 2.30.1 Patch available CNA
  • n8n Vendorn8n Affected before 2.29.8 Fixed in 2.29.8 Patch available CNA
  • n8n (npm) Vendor— Affected 2.30.0 to before 2.30.1 Fixed in 2.30.1 Patch available GHSA-q5xf-xhwf-cwqf
  • n8n (npm) Vendor— Affected before 2.29.8 Fixed in 2.29.8 Patch available GHSA-q5xf-xhwf-cwqf

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*2.27.0 to before 2.29.8Vulnerablen8n
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*2.27.0 to before 2.29.8Vulnerablen8n
cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:*2.30.0Vulnerablen8n
cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:*2.30.0Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* Versions 2.27.0 to before 2.29.8 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* Versions 2.27.0 to before 2.29.8 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:* Versions 2.30.0 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:* Versions 2.30.0 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n-io) Fixed in 2.30.1
  • Fix · CNA n8n (n8n-io) Fixed in 2.29.8
  • Fix · GHSA-q5xf-xhwf-cwqf n8n (npm) Fixed in 2.30.1 Advisory →
  • Fix · GHSA-q5xf-xhwf-cwqf n8n (npm) Fixed in 2.29.8 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    n8n-io n8n 2.29.8, 2.30.1

    13 records Highest priority Priority MEDIUM 3 MEDIUM, 10 LOW

    Other records, highest priority first

    • TI-2026-46758 n8n before 2.29.8 and 2.30.1 Privilege Escalation via Token ExchangePriority MEDIUM 42
    • TI-2026-46754 n8n before 1.123.64 Sanitizer Bypass Remote Code ExecutionPriority MEDIUM 42
    • TI-2026-46761 n8n before 1.123.64 Remote Code Execution via Git ClonePriority MEDIUM 40
    Show all 13 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65594
  2. 2026-10-03 Alias added: GHSA-q5xf-xhwf-cwqf
  3. 2026-10-29 Affected versions changed · CNA

References

Advisory 2

Other 3

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences