CVE-2026-72769
Published:August 11, 2026
Updated:August 31, 2026
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.
Affected Packages
n8n (NPM):
Affected version(s) >=0.0.1 <1.123.67Fix Suggestion:
Update to version 1.123.67n8n (NPM):
Affected version(s) >=2.0.0-rc.0 <2.31.5Fix Suggestion:
Update to version 2.31.5n8n (NPM):
Affected version(s) =2.32.0 <2.32.1Fix Suggestion:
Update to version 2.32.1Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
EPSS
Base Score:
0.25