← Back
2025-12-26 21:49CVE-2025-68668GitHub_M
PUBLISHED5.2CWE-693

n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node

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.

Problem type

Affected products

n8n-io

n8n

>= 1.0.0, < 2.0.0 - AFFECTED

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-62r4-hw23-cc8v

https://github.com/n8n-io/n8n/security/advisories/GHSA-62r4-hw23-cc8v

x_refsource_CONFIRM

GitHub Security Advisories

GHSA-62r4-hw23-cc8v

n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node

https://github.com/advisories/GHSA-62r4-hw23-cc8v

Impact

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.

Patches

In n8n version 1.111.0, a task-runner-based native Python implementation was introduced as an optional feature, providing a more secure isolation model.

To enable it, you need to configure the N8N_RUNNERS_ENABLED and N8N_NATIVE_PYTHON_RUNNER environment variables.

This implementation became the default starting with n8n version 2.0.0.

Workarounds

  • Disable the Code Node by setting the environment variable NODES_EXCLUDE: "[\"n8n-nodes-base.code\"]" (Docs)
  • Disable Python support in the Code node by setting the environment variable N8N_PYTHON_ENABLED=false, which was introduced in n8n version 1.104.0.
  • Configure n8n to use the task runner based Python sandbox via the N8N_RUNNERS_ENABLED and N8N_NATIVE_PYTHON_RUNNER environment variables. (Docs)

Resources

github.com

https://github.com/n8n-io/n8n/security/advisories/GHSA-62r4-hw23-cc8v

github.com

https://github.com/advisories/GHSA-62r4-hw23-cc8v

JSON source

https://cveawg.mitre.org/api/cve/CVE-2025-68668
Click to expand
{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2025-68668",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2025-12-26T21:59:34.256Z",
    "dateReserved": "2025-12-22T23:37:00.930Z",
    "datePublished": "2025-12-26T21:49:20.695Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2025-12-26T21:49:20.695Z"
      },
      "title": "n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "affected": [
        {
          "vendor": "n8n-io",
          "product": "n8n",
          "versions": [
            {
              "version": ">= 1.0.0, < 2.0.0",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-693: Protection Mechanism Failure",
              "cweId": "CWE-693",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-62r4-hw23-cc8v",
          "name": "https://github.com/n8n-io/n8n/security/advisories/GHSA-62r4-hw23-cc8v",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "scope": "CHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "availabilityImpact": "LOW",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL"
          }
        }
      ]
    },
    "adp": [
      {
        "providerMetadata": {
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP",
          "dateUpdated": "2025-12-26T21:59:34.256Z"
        },
        "title": "CISA ADP Vulnrichment",
        "metrics": [
          {}
        ]
      }
    ]
  }
}