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TI-2026-65621 Aliases CVE-2026-103246GHSA-6w8v-v5w3-7x56

n8n before 2.39.6 and 2.40.x before 2.40.1 Credential Disclosure via Node-Tool Introspection

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
High · None · None
Fix status
Fixed

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

Summary

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00258 17th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 2.39.6, 2.40.1

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 2.39.6; 2.40.0 to before 2.40.12.39.6, 2.40.1Patch availableCNA
  • n8n Vendorn8n Affected before 2.39.6; 2.40.0 to before 2.40.1 Fixed in 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 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 2.39.6, 2.40.1

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-65634 n8n before 2.39.6 and 2.40.x before 2.40.1 Session Token Leak via Dynamic CredentialsPriority LOW 38
    • TI-2026-65631 n8n before 2.39.6 and 2.40.x before 2.40.1 Credentials Leak via preAuthentication HookPriority LOW 31
    • TI-2026-65633 n8n before 2.39.6 and 2.40.x before 2.40.1 Filter Bypass via Parameter InterpolationPriority LOW 30
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-103246
  2. 2026-10-03 Alias added: GHSA-6w8v-v5w3-7x56
  3. 2026-10-06 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