HighVulnerability

CVE-2026-119408: n8n remote code execution via deprecated Function and LangChain Code nodes

Source: NVD(opens in a new tab)
Identifier: CVE-2026-119408
Published: October 30, 2026
Record updated: October 30, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.

Summary

n8n versions before 2.42.6, 2.43.x before 2.43.3, and 3.x before 3.0.1 contain CVE-2026-119408, a remote code execution flaw. The deprecated Function, Function Item, and LangChain Code nodes run outside task runner isolation. Authenticated users who can create, modify, or import workflows that name these hidden node types can execute JavaScript in the n8n main process.

Mitigation

Fixed in n8n 2.42.6, 2.43.3, and 3.0.1, depending on the release line.

Details

Scores and exploitation

CVSS score: 8.8(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: Not scored. FIRST had not published an EPSS score for this CVE when it was last checked on October 30, 2026.
Disclosure date: October 30, 2026

Weaknesses and techniques

Weakness (CWE): CWE-653

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Framework
Impact: Confidentiality,
Integrity,
Availability
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-119408

First tracked: October 30, 2026 at 02:08 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 80% (self-assessed)

Summary

Mitigation

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