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CVE-2026-119408— n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes

Quick assessment

Affected
n8n-io n8n
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

n8n 在以下版本中存在远程代码执行漏洞：2.42.6 之前的版本、2.43.x 系列中 2.43.3 之前的版本，以及 3.x 系列中 3.0.1 之前的版本。该漏洞源于已弃用的 Function、Function Item 和 LangChain Code 节点在任务运行器（task runner）隔离环境之外执行。能够创建、修改或导入工作流的已认证用户，若将工作流中命名为这些隐藏节点类型，即可在 n8n 主进程中执行任意 JavaScript 代码。

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-119408

Vulnerability Information
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Vulnerability Title
n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的划分
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n 2.43.0 ~ 2.43.3 -
n8n-io n8n 0 ~ 2.42.6 -
n8n-io n8n 3.0.0 ~ 3.0.1 -

II. Public POCs for CVE-2026-119408

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-119408

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Patches & Fixes for CVE-2026-119408 (1)

Vendor Advisories for CVE-2026-119408 (2)

Vendor Pages for CVE-2026-119408 (3)

Other References for CVE-2026-119408 (1)

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-653