Vulnerability-Lookup

CVE-2026-56351 (GCVE-0-2026-56351)

Vulnerability from cvelistv5 – Published: 2026-06-24 11:53 – Updated: 2026-06-24 12:42

Title

n8n - SQL Injection in MySQL, PostgreSQL, and Microsoft SQL Nodes

Summary

n8n before version 2.4.0 contains a sql injection vulnerability in MySQL, PostgreSQL, and Microsoft SQL nodes that allows authenticated users to inject arbitrary SQL through unescaped identifier values in node configuration parameters. Attackers with workflow creation permissions can supply specially crafted table or column names to execute unauthorized database commands and compromise data integrity.

Severity ?

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

8.2 (High)


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

CWE

CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Assigner

VulnCheck

References

URL

Tags

	https://github.com/n8n-io/n8n/security/advisories…	vendor-advisory
	https://www.vulncheck.com/advisories/n8n-sql-inje…	third-party-advisory

Impacted products

	Vendor	Product	Version
	n8n	n8n	Affected: 0 , < 2.4.0 (semver) Unaffected: 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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GHSA-F3F2-MCXC-PWJX

Vulnerability from github – Published: 2026-02-26 15:56 – Updated: 2026-06-24 13:08

Summary

n8n: SQL Injection in MySQL, PostgreSQL, and Microsoft SQL nodes

Details

Impact

An authenticated user with permission to create or modify workflows and access to a database credential could unknowingly create a workflow that was vulnerable to SQL injection, even while expecting inputs to be handled safely through escaped parameters. By supplying specially crafted table or column names, an attacker could inject arbitrary SQL because the MySQL, PostgreSQL, and Microsoft SQL nodes did not escape identifier values when constructing queries, enabling injection through node configuration parameters.

Patches

The issue has been fixed in n8n version 2.4.0. 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 the MySQL, PostgreSQL, and Microsoft SQL nodes by adding n8n-nodes-base.mySql, n8n-nodes-base.postgres, and n8n-nodes-base.microsoftSql to the NODES_EXCLUDE environment variable.

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

Credit

Reporter: Pawel Bednarz from the NATO Cyber Security Centre (NCSC)

Severity ?

8.2 (High)


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

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-56351"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-89"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-26T15:56:31Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Impact\nAn authenticated user with permission to create or modify workflows and access to a database credential could unknowingly create a workflow that was vulnerable to SQL injection, even while expecting inputs to be handled safely through escaped parameters. By supplying specially crafted table or column names, an attacker could inject arbitrary SQL because the MySQL, PostgreSQL, and Microsoft SQL nodes did not escape identifier values when constructing queries, enabling injection through node configuration parameters.\n\n## Patches\nThe issue has been fixed in n8n version 2.4.0. Users should upgrade to this version or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Limit workflow creation and editing permissions to fully trusted users only.\n- Disable the MySQL, PostgreSQL, and Microsoft SQL nodes by adding `n8n-nodes-base.mySql`, `n8n-nodes-base.postgres`, and `n8n-nodes-base.microsoftSql` to the `NODES_EXCLUDE` environment variable.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n## Credit\n\nReporter: Pawel Bednarz from the NATO Cyber Security Centre (NCSC)",
  "id": "GHSA-f3f2-mcxc-pwjx",
  "modified": "2026-06-24T13:08:59Z",
  "published": "2026-02-26T15:56:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-f3f2-mcxc-pwjx"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/commit/f73fae6fe7fc34907bba102648a9997186aa4385"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/n8n-io/n8n"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n%402.4.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n: SQL Injection in MySQL, PostgreSQL, and Microsoft SQL nodes"
}

FKIE_CVE-2026-56351

Vulnerability from fkie_nvd - Published: 2026-06-24 13:16 - Updated: 2026-06-26 02:01

Severity ?

8.2 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/n8n-io/n8n/security/advisories/GHSA-f3f2-mcxc-pwjx	Mitigation, Vendor Advisory
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/n8n-sql-injection-in-mysql-postgresql-and-microsoft-sql-nodes	Third Party Advisory

Impacted products

	Vendor	Product	Version
	n8n	n8n	*

JSON

To clipboard

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    }
  ],
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  "lastModified": "2026-06-26T02:01:57.657",
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          "availabilityRequirement": "NOT_DEFINED",
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          "exploitMaturity": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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}

Sightings

Author	Source	Type	Date

Nomenclature

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.

Action not permitted

CVE-2026-56351 (GCVE-0-2026-56351)

GHSA-F3F2-MCXC-PWJX

Impact

Patches

Workarounds

Credit

FKIE_CVE-2026-56351

Tags

Sightings

Nomenclature