Vulnerability Description
n8n before 2.42.6, 2.43.x before 2.43.3, and 3.x before 3.0.1 contains a remote code execution vulnerability via deprecated Function, Function Item, and LangChain Code nodes running outside task runner isolation. Authenticated users who can create, modify, or import workflows naming these hidden node types can execute JavaScript in the n8n main process.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://abraxaslabs.tech/research/n8n-function-vm2
- https://github.com/n8n-io/n8n
- https://github.com/n8n-io/n8n/blob/[email protected]/packages/nodes-base/nodes/Function
- https://github.com/n8n-io/n8n/commit/ea8417e29ad6f8b981d9a04b17283d5d77f2b5bb
- https://github.com/n8n-io/n8n/releases/tag/[email protected]
- https://github.com/n8n-io/n8n/releases/tag/[email protected]
- https://github.com/n8n-io/n8n/releases/tag/[email protected]
- https://github.com/n8n-io/n8n/security/advisories/GHSA-9p7v-45m2-wxgj
- https://www.vulncheck.com/advisories/n8n-before-2.42.6-2.43.3-and-3.0.1-code-exe
FAQ
What is CVE-2026-119408?
CVE-2026-119408 is a vulnerability with a CVSS score of 8.8 (HIGH). n8n before 2.42.6, 2.43.x before 2.43.3, and 3.x before 3.0.1 contains a remote code execution vulnerability via deprecated Function, Function Item, and LangChain Code nodes running outside task runne...
How severe is CVE-2026-119408?
CVE-2026-119408 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119408?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.