n8n-io n8n up to 1.x Environment Variable NODES_EXCLUDE protection mechanism

CVSS Meta Temp Score
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability was found in n8n-io n8n up to 1.x and classified as critical. Affected by this issue is some unknown functionality of the component Environment Variable Handler. Executing a manipulation of the argument NODES_EXCLUDE can lead to protection mechanism. This vulnerability is tracked as CVE-2025-68668. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in n8n-io n8n up to 1.x. This vulnerability affects an unknown code of the component Environment Variable Handler. The manipulation of the argument NODES_EXCLUDE with an unknown input leads to a protection mechanism vulnerability. The CWE definition for the vulnerability is CWE-693. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

n8n is an open source workflow automation platform. From version 1.0.0 to before 2.0.0, a sandbox bypass vulnerability exists in the Python Code Node that uses Pyodide. An authenticated user with permission to create or modify workflows can exploit this vulnerability to execute arbitrary commands on the host system running n8n, using the same privileges as the n8n process. This issue has been patched in version 2.0.0. Workarounds for this issue involve disabling the Code Node by setting the environment variable NODES_EXCLUDE: "[\"n8n-nodes-base.code\"]", disabling Python support in the Code node by setting the environment variable N8N_PYTHON_ENABLED=false, which was introduced in n8n version 1.104.0, and configuring n8n to use the task runner based Python sandbox via the N8N_RUNNERS_ENABLED and N8N_NATIVE_PYTHON_RUNNER environment variables.

The advisory is available at github.com. This vulnerability was named CVE-2025-68668 since 12/23/2025. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit.

Upgrading to version 2.0.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-205454) and CERT Bund (WID-SEC-2026-0016). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • n8n n8n

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.7
VulDB Meta Temp Score: 8.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.9
NVD Vector: 🔒

CNA Base Score: 9.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Protection mechanism
CWE: CWE-693
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: n8n 2.0.0

Timelineinfo

12/23/2025 CVE reserved
12/27/2025 +4 days Advisory disclosed
12/27/2025 +0 days VulDB entry created
01/06/2026 +10 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-62r4-hw23-cc8v
Status: Confirmed

CVE: CVE-2025-68668 (🔒)
GCVE (CVE): GCVE-0-2025-68668
GCVE (VulDB): GCVE-100-338482
EUVD: 🔒
CERT Bund: WID-SEC-2026-0016 - n8n: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit den Rechten des Dienstes

Entryinfo

Created: 12/27/2025 09:35
Updated: 01/06/2026 16:49
Changes: 12/27/2025 09:35 (65), 12/27/2025 10:56 (1), 01/01/2026 06:22 (11), 01/06/2026 16:49 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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