Vulnerability-Lookup

GHSA-HWMJ-QG4V-CVG9

Vulnerability from github – Published: 2026-07-22 22:22 – Updated: 2026-07-22 22:22

Summary

n8n: MySQL v1 Node executeQuery Operation Allows SQL Injection via Unparameterized Expression Interpolation

Details

Impact

The legacy MySQL v1 node's executeQuery operation substitutes evaluated {{ ... }} expression values directly into the raw SQL string without parameterization. If a workflow uses this operation with expression-sourced values in the query and is connected to an externally-reachable trigger (such as a Webhook node), attacker-controlled input reaching those expressions results in SQL injection.

Successful exploitation allows arbitrary SQL execution with the configured MySQL credentials' privileges, enabling unauthorized disclosure, modification, or deletion of data in the downstream database. MySQL v2 node is not affected.

This issue can affect only instances running workflows that use the MySQL v1 node with executeQuery operations.

Patches

The issue has been fixed in n8n versions 1.123.61, 2.27.4, and 2.28.1. Users should upgrade to one of these versions or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Disable the MySQL node by adding n8n-nodes-base.mySql to the NODES_EXCLUDE environment variable, or audit and restrict access to workflows using the MySQL v1 node with the executeQuery operation. - Ensure that webhook endpoints used in workflows containing MySQL v1 executeQuery nodes with expression interpolation require authentication. - Migrate affected workflows to use the MySQL v2 node, which uses parameterized queries.

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

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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.123.61"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.28.0"
            },
            {
              "fixed": "2.28.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0-rc.0"
            },
            {
              "fixed": "2.27.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-59257"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-89"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-22T22:22:22Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Impact\nThe legacy MySQL v1 node\u0027s `executeQuery` operation substitutes evaluated `{{ ... }}` expression values directly into the raw SQL string without parameterization. If a workflow uses this operation with expression-sourced values in the query and is connected to an externally-reachable trigger (such as a Webhook node), attacker-controlled input reaching those expressions results in SQL injection.\n\nSuccessful exploitation allows arbitrary SQL execution with the configured MySQL credentials\u0027 privileges, enabling unauthorized disclosure, modification, or deletion of data in the downstream database. MySQL v2 node is not affected.\n\nThis issue can affect only instances running workflows that use the MySQL v1 node with `executeQuery` operations.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.61, 2.27.4, and 2.28.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Disable the MySQL node by adding `n8n-nodes-base.mySql` to the `NODES_EXCLUDE` environment variable, or audit and restrict access to workflows using the MySQL v1 node with the `executeQuery` operation.\n- Ensure that webhook endpoints used in workflows containing MySQL v1 `executeQuery` nodes with expression interpolation require authentication.\n- Migrate affected workflows to use the MySQL v2 node, which uses parameterized queries.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.",
  "id": "GHSA-hwmj-qg4v-cvg9",
  "modified": "2026-07-22T22:22:22Z",
  "published": "2026-07-22T22:22:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-hwmj-qg4v-cvg9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59257"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/n8n-io/n8n"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.61"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.27.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.28.1"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/n8n-sql-injection-in-mysql-v1-executequery-operation-via-expression-interpolation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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: MySQL v1 Node executeQuery Operation Allows SQL Injection via Unparameterized Expression Interpolation"
}

CVE-2026-59257 (GCVE-0-2026-59257)

Vulnerability from cvelistv5 – Published: 2026-07-08 13:49 – Updated: 2026-07-09 13:39

Title

n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation

Summary

n8n before 1.123.61, 2.x before 2.27.4, and 2.28.x before 2.28.1 contains a SQL injection vulnerability in the legacy MySQL v1 node's executeQuery operation. The operation substitutes evaluated {{ ... }} expression values directly into the raw SQL string without parameterization. When a workflow uses this operation with expression-sourced values and is connected to an externally-reachable trigger (such as a Webhook node), attacker-controlled input reaching those expressions results in SQL injection, allowing execution of arbitrary SQL with the configured MySQL credentials' privileges. The MySQL v2 node, which uses parameterized queries, is not affected.

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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

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

Assigner

VulnCheck

References

2 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

3 products

Vendor	Product	Version
n8n	n8n	Affected: 0 , < 1.123.61 (semver) Unaffected: 1.123.61 (semver)
n8n	n8n	Affected: 0 , < 2.28.1 (semver) Unaffected: 2.28.1 (semver)
n8n	n8n	Affected: 0 , < 2.27.4 (semver) Unaffected: 2.27.4 (semver)

Date Public

2026-06-24 00:00

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JSON

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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

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