{"id":"CVE-2026-110848","published":"2026-10-14T23:17:25.563","lastModified":"2026-10-16T18:17:33.780","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-1321"],"vendors":[],"products":[],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-3p2g-2wpm-8h3g","tags":[]},{"url":"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","tags":[]}],"exploitRefs":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-3p2g-2wpm-8h3g","tags":[]}],"hasPoc":true,"ai":null}