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CVE PROGRAM SOURCE RECORD6.0 Medium

CVE-2026-110848

n8n before 1.123.83, 2.41.4, and 2.42.1 Prototype Pollution via AI Workflow Builder Connection Merge

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n8n-io n8n

Default version status: unaffected

  • 0 to < 1.123.83affected
  • 2.0.0 to < 2.41.4affected
  • 2.42.0 to < 2.42.1affected
pkg:npm/n8n

References