CVE-2026-59257: n8n SQL Injection Vulnerability
MODERATECVE-2026-59257 is a MODERATE sql injection vulnerability (CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) affecting n8n libraries in the npm ecosystem. The issue involves mysql v1 node executequery operation allows sql injection via unparameterized expression interpolation. Remediation is available by upgrading affected packages to version 1.123.61, 2.28.1, 2.27.4.
CVE-2026-59257 at a Glance
How to Fix CVE-2026-59257
To remediate this vulnerability, upgrade all affected n8n dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install n8n@1.123.61npm install n8n@2.28.1npm install n8n@2.27.4Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls n8nHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-59257, inspect your project dependencies using npm:
npm ls n8nAnalyze the terminal output to locate any version of n8n in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.123.61), your application is affected.
Note: The npm ls n8n command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where the product constructs all or part of an sql command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended sql command when it is sent to a downstream component. without sufficient removal or quoting of sql syntax in user-controllable inputs, the generated sql query can cause those inputs to be interpreted as sql instead of ordinary user data. In n8n, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-59257 Affected n8n Versions
3 component(s)References
Frequently Asked Questions
What is CVE-2026-59257?
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What version fixes CVE-2026-59257?
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Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-hwmj-qg4v-cvg9",
"modified" : "2026-07-22T22:22:22Z",
"published" : "2026-07-22T22:22:22Z",
"aliases" : [ "CVE-2026-59257" ],
"summary" : "n8n: MySQL v1 Node executeQuery Operation Allows SQL Injection via Unparameterized Expression Interpolation",
"details" : "## Impact\nThe 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.\n\nSuccessful 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.\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.",
"severity" : [ {
"type" : "CVSS_V4",
"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"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "n8n"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.123.61"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "n8n"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.28.0"
}, {
"fixed" : "2.28.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "n8n"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0-rc.0"
}, {
"fixed" : "2.27.4"
} ]
} ]
} ],
"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"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-89" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-07-22T22:22:22Z",
"nvd_published_at" : null
}
}