CVE-2026-103245
Published:October 01, 2026
Updated:October 09, 2026
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 fail to verify the x-webflow-signature HMAC in the Webflow Trigger node webhook handler. Unauthenticated attackers can send forged webhook requests with attacker-controlled payloads to trigger workflows and manipulate downstream actions like record creation or API calls.
Affected Packages
https://github.com/n8n-io/n8n.git (GITHUB):
Affected version(s) =n8n@2.40.0 <n8n@2.40.1Fix Suggestion:
Update to version n8n@2.40.1https://github.com/n8n-io/n8n.git (GITHUB):
Affected version(s) >=n8n@2.0.0 <n8n@2.39.6Fix Suggestion:
Update to version n8n@2.39.6https://github.com/n8n-io/n8n.git (GITHUB):
Affected version(s) >=n8n@1.54.0 <n8n@1.123.80Fix Suggestion:
Update to version n8n@1.123.80n8n-nodes-base (NPM):
Affected version(s) >=1.54.0 <1.121.52Fix Suggestion:
Update to version 1.121.52n8n-nodes-base (NPM):
Affected version(s) >=2.0.0 <2.39.4Fix Suggestion:
Update to version 2.39.4n8n-nodes-base (NPM):
Affected version(s) =2.40.0 <2.40.1Fix Suggestion:
Update to version 2.40.1Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Verification of Cryptographic Signature
EPSS
Base Score:
0.16