CVE-2026-110848
Published:October 14, 2026
Updated:October 15, 2026
n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a prototype pollution vulnerability in the AI workflow builder, which merges workflow connections using node names as object members without checking for reserved keys. Authenticated users can create nodes named proto through the API and invoke the connect-nodes operation to pollute the global object prototype, disrupting the instance until restart.
Affected Packages
n8n (NPM):
Affected version(s) =2.42.0 <2.42.1Fix Suggestion:
Update to version 2.42.1n8n (NPM):
Affected version(s) >=0.0.1 <1.123.83Fix Suggestion:
Update to version 1.123.83n8n (NPM):
Affected version(s) >=2.41.0 <2.41.4Fix Suggestion:
Update to version 2.41.4Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (2)
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Contact UsCVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')