Read the docs
TI-2026-65626 Aliases CVE-2026-103251GHSA-c2h5-4pr8-j687

n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub

Priority LOW 34CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments. Attackers with Redis write access can bypass name validation, permission checks, checksum verification, and npm safety checks to install arbitrary npm packages across all cluster instances without authentication.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00201 10th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.80, 2.39.6, 2.40.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 1.123.80; 2.0.0 to before 2.39.6; 2.40.0 to before 2.40.11.123.80, 2.39.6, 2.40.1Patch availableCNA
  • n8n Vendorn8n Affected before 1.123.80; 2.0.0 to before 2.39.6; 2.40.0 to before 2.40.1 Fixed in 1.123.80, 2.39.6, 2.40.1 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

  • Fix · CNA n8n (n8n-io) Fixed in 1.123.80, 2.39.6, 2.40.1

Fixed in the same release

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

  • Release ·

    n8n-io n8n 1.123.80, 2.39.6, 2.40.1

    10 records Highest priority Priority LOW 10 LOW

    Other records, highest priority first

    • TI-2026-65632 n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal via n8n NodePriority LOW 38
    • TI-2026-65620 n8n before 1.123.80, 2.39.6, and 2.40.1 Missing Webhook Signature VerificationPriority LOW 36
    • TI-2026-65630 n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal and Query Injection via SupabasePriority LOW 33
    Show all 10 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-103251
  2. 2026-10-03 Alias added: GHSA-c2h5-4pr8-j687

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