CVE-2026-110848

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-3p2g-2wpm-8h3g
https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-prototype-pollution-via-ai-workflow-builder-connection-merge

Configurations

No configuration.

History

14 Oct 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 23:17

Updated : 2026-10-16 18:17

NVD link : CVE-2026-110848

Mitre link : CVE-2026-110848

CVE.ORG link : CVE-2026-110848

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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