GHSA-HV53-3329-VMRM

Vulnerability from github – Published: 2026-02-04 19:39 – Updated: 2026-02-04 19:39
VLAI?
Summary
n8n Merge Node has Arbitrary File Write leading to RCE
Details

Impact

A vulnerability in the Merge node's SQL Query mode allowed authenticated users with permission to create or modify workflows to write arbitrary files to the n8n server's filesystem potentially leading to remote code execution.

Patches

The issue has been fixed in n8n version 2.4.0, 1.118.0. Users should upgrade to this version or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

  • Limit workflow creation and editing permissions to fully trusted users only.
  • Disable or restrict use of the Merge node if not essential for operations.
  • Review workflows for suspicious use of the Merge node's SQL Query mode.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Resources

n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility.

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

Severity ?
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.118.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25056"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434",
      "CWE-693"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-04T19:39:41Z",
    "nvd_published_at": "2026-02-04T17:16:23Z",
    "severity": "CRITICAL"
  },
  "details": "## Impact\n\nA vulnerability in the Merge node\u0027s SQL Query mode allowed authenticated users with permission to create or modify workflows to write arbitrary files to the n8n server\u0027s filesystem potentially leading to remote code execution.\n\n## Patches\n\nThe issue has been fixed in n8n version 2.4.0, 1.118.0. Users should upgrade to this version or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n\n- Limit workflow creation and editing permissions to fully trusted users only.\n- Disable or restrict use of the Merge node if not essential for operations.\n- Review workflows for suspicious use of the Merge node\u0027s SQL Query mode.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n## **Resources**\n\n- [n8n Documentation \u2014 Blocking nodes](https://docs.n8n.io/hosting/securing/blocking-nodes/)\u00a0\u2014 how to globally disable specific nodes\n\n\n---\nn8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility. \n\nCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "id": "GHSA-hv53-3329-vmrm",
  "modified": "2026-02-04T19:39:41Z",
  "published": "2026-02-04T19:39:41Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-hv53-3329-vmrm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25056"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/n8n-io/n8n"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n Merge Node has Arbitrary File Write leading to RCE"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.