Read the docs
TI-2026-82154 Aliases CVE-2026-118640GHSA-9w9c-v85p-45fq

Authorization bypass in n8n Chat Hub lets chat-only users add tools

Priority LOW 23CWE-863Published · 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
Low · Low · None
Fix status
Fixed

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

Summary

n8n before 1.123.85, from 2.0.0 before 2.43.5, and from 2.44.0 before 2.44.1 are affected. An authorization bypass (CWE-863) in Chat Hub lets users with the global:chatUser role register restricted tool types. Such a chat-only user can run those tools to execute sandboxed code, reach permitted files, and use instance workflows, Data Tables, and agents.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability in Chat Hub that allows chat-only users to register restricted tool types. Users with the global:chatUser role can add and run tools through chat to execute sandboxed code, access permitted files, and use instance workflows, Data Tables, and agents.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00189 8th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.85, 2.44.1, 2.43.5

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 1.123.851.123.85Patch availableCNA
n8nn8n2.44.0 to before 2.44.12.44.1Patch availableCNA
n8nn8n2.0.0 to before 2.43.52.43.5Patch availableCNA
  • n8n Vendorn8n Affected before 1.123.85 Fixed in 1.123.85 Patch available CNA
  • n8n Vendorn8n Affected 2.44.0 to before 2.44.1 Fixed in 2.44.1 Patch available CNA
  • n8n Vendorn8n Affected 2.0.0 to before 2.43.5 Fixed in 2.43.5 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*——n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:* Versions — — ·n8n

Remediation

Update n8n to 1.123.85, 2.43.5, or 2.44.1, matching the release line in use.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA n8n (n8n-io) Fixed in 1.123.85
  • Fix · CNA n8n (n8n-io) Fixed in 2.44.1
  • Fix · CNA n8n (n8n-io) Fixed in 2.43.5

Fixed in the same release

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

  • Release ·

    n8n-io n8n 2.43.5, 2.44.1

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2026-82163 Authorization bypass in n8n exposes Data Table rows of all projectsPriority LOW 39
    • TI-2026-82162 Stored cross-site scripting in n8n webhook responsesPriority LOW 38
    • TI-2026-82160 Regular expression DoS in n8n Read/Write Files nodePriority LOW 31
    Show all 11 records →
  • Release ·

    n8n-io n8n 1.123.85

    10 records Highest priority Priority LOW 10 LOW

    Other records, highest priority first

    • TI-2026-82162 Stored cross-site scripting in n8n webhook responsesPriority LOW 38
    • TI-2026-82160 Regular expression DoS in n8n Read/Write Files nodePriority LOW 31
    • TI-2026-82159 Filter injection in n8n Quick Base node Where parameterPriority LOW 30
    Show all 10 records →

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-118640
  2. 2026-10-28 Alias added: GHSA-9w9c-v85p-45fq
  3. 2026-11-03 CISA SSVC decision points changed

References

Advisory 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-2026-82991 Code execution in n8n via deprecated Function nodes CVSS 4.0HIGH 8.7
  • TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
See all 233 →

Sources

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