CVE-2026-103260
Published:October 01, 2026
Updated:October 13, 2026
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an approval bypass vulnerability in the Send and Wait node's Approve Within Chat mode. Attackers can submit resume requests without verification of the requester's identity or approval permissions, allowing unauthenticated users to advance waiting executions and trigger guarded actions.
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@2.32.0 <n8n@2.39.6Fix Suggestion:
Update to version n8n@2.39.6n8n (NPM):
Affected version(s) >=2.32.0 <2.39.6Fix Suggestion:
Update to version 2.39.6n8n (NPM):
Affected version(s) =2.40.0 <2.40.1Fix Suggestion:
Update to version 2.40.1n8n-nodes-base (NPM):
Affected version(s) =2.40.0 <2.40.1Fix Suggestion:
Update to version 2.40.1n8n-nodes-base (NPM):
Affected version(s) >=2.32.0 <2.39.4Fix Suggestion:
Update to version 2.39.4Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
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
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Missing Authorization
EPSS
Base Score:
0.28