GHSA-f3f2-mcxc-pwjx

Source

https://github.com/advisories/GHSA-f3f2-mcxc-pwjx

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-f3f2-mcxc-pwjx/GHSA-f3f2-mcxc-pwjx.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-f3f2-mcxc-pwjx

Published

2026-02-26T15:56:31Z

Modified

2026-02-26T16:02:38.807226Z

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
5.3 (Medium) CVSS_V4 - 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 CVSS Calculator

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)

Database specific

{
    "cwe_ids": [
        "CWE-89"
    ],
    "github_reviewed_at": "2026-02-26T15:56:31Z",
    "nvd_published_at": null,
    "severity": "MODERATE",
    "github_reviewed": true
}

References

Affected packages

npm / n8n

Package

Name: n8n; View open source insights on deps.dev
Purl: pkg:npm/n8n

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.4.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-f3f2-mcxc-pwjx/GHSA-f3f2-mcxc-pwjx.json"