CVE-2026-119408 (CVSS 8.8)

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.

Is your site exposed to CVE-2026-119408?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0063

Probability of exploitation

0.51%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-653 CWE-653

References

Other 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] 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-execution-outside-task-runner-isolation-via-deprecated-function-nodes

Frequently Asked Questions

What is CVE-2026-119408? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-119408? +

CVE-2026-119408 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0063, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-119408? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-3717

When using the Grafana Snowflake Datasource Plugin, if Oauth passthrough is enabled on the datasource, and multiple users are using …

CVE-2026-15366

A control logic defect in a specific built-in webpage of Kids Mode allows users to view local gallery photos directly …

CVE-2024-5801

Enabled IP Forwarding feature in B&R Automation Runtime versions before 6.0.2 may allow remote attack-ers to compromise network security by …

CVE-2024-8118

In Grafana, the wrong permission is applied to the alert rule write API endpoint, allowing users with permission to write …

CVE-2025-41116

When using the Grafana Databricks Datasource Plugin, if Oauth passthrough is enabled on the datasource, and multiple users are using …

CVE-2026-65635

Improper Isolation or Compartmentalization vulnerability in malach-it boruta (Elixir.Boruta.Openid module) allows attackers to register OpenID Connect clients with administrative privileges …