MEDIUM 6.0 NVD
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
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.
References
- 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-pollu
This medium severity vulnerability with a CVSS score of 6.0 was published on 2026-10-14 via NVD.
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