Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119408n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes
High 8.8
In plain English
A high-severity security flaw in n8n from n8n-io. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.6%top 49.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-653 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-9p7v-45m2-wxgj) vendor-advisory
- https://github.com/n8n-io/n8n/commit/ea8417e29ad6f8b981d9a04b17283d5d77f2b5bb patch
- https://github.com/n8n-io/n8n/blob/n8n@2.42.0/packages/nodes-base/nodes/Function/Function.node.ts#L167 technical-description
- n8n n8n@2.42.6 Release Notes release-notes
- n8n n8n@2.43.3 Release Notes release-notes
- n8n n8n@3.0.1 Release Notes release-notes
- https://abraxaslabs.tech/research/n8n-function-vm2 third-party-advisory
- https://github.com/n8n-io/n8n product
- VulnCheck Advisory: n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes third-party-advisory