- CVSS
- HIGH · 8.8v3.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- 2026-10-30
- Weakness
- CWE-653
- Source
- nvd.nist.gov/vuln/detail/CVE-2026-119408
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.
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/Function.node.ts#L167
- 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]
How GTK Cyber trains on this
AI security training at GTK Cyber covers the LLM and ML-pipeline vulnerability classes that vulnerabilities like CVE-2026-119408 fall into. Our hands-on courses are taught by Charles Givre and other practitioners who break and defend production AI systems.