CVE-2026-65598: n8n Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-g3r5-9h93-4j2c
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CWE-367
Published
Advisory Summary

CVE-2026-65598 is a HIGH remote code execution vulnerability (CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition) affecting n8n libraries in the npm ecosystem. The issue involves race condition in git clone node allows authenticated users to achieve remote code execution. Remediation is available by upgrading affected packages to version 1.123.64, 2.30.1, 2.29.8.

CVE-2026-65598 at a Glance

CVE Identifier CVE-2026-65598
GHSA Identifier GHSA-g3r5-9h93-4j2c
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
Affected Product n8n
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-65598

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.

n8n fixed: 1.123.64 
npm install n8n@1.123.64
n8n fixed: 2.30.1 
npm install n8n@2.30.1
n8n fixed: 2.29.8 
npm install n8n@2.29.8
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls n8n

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-65598, inspect your project dependencies using npm:

npm ls n8n

Analyze 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 1.123.64), 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-367: Time-of-check Time-of-use (TOCTOU) Race Condition, where the product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. 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

## Impact A TOCTOU race condition in the Git node's `clone` operation lets an authenticated user bypass its path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This plants a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, and since nodes execute JavaScript, this yields arbitrary code execution on the server. Both self-hosted and cloud instances are affected, where authenticated users can create and run workflows using the Git node. ## Patches Users should upgrade to the patched version once available to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Restrict n8n instance access to fully trusted users only. - Disable the Git node by adding `n8n-nodes-base.git` to the `NODES_EXCLUDE` environment variable. - Restrict network egress from the n8n instance to prevent connections to attacker-controlled git repositories. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

CVE-2026-65598 Affected n8n Versions

3 component(s)
Fixed Versions:
1.123.642.30.12.29.8
Product / Package Ecosystem Affected Versions Fixed Version
n8n
npm/n8n
npm
< 1.123.64
1.123.64
n8n
npm/n8n
npm
≥ 2.30.0
< 2.30.1
2.30.1
n8n
npm/n8n
npm
≥ 2.0.0-rc.0
< 2.29.8
2.29.8

References

GitHub Advisory / Wiki ADVISORY
https://github.com/n8n-io/n8n/security/advisories/GHSA-g3r5-9h93-4j2c
NVD — CVE-2026-65598 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65598
n8n Source Repository REPOSITORY
https://github.com/n8n-io/n8n
n8n Release RELEASE
https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64
n8n Release RELEASE
https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8
n8n Release RELEASE
https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1
www.vulncheck.com/advisories/n8n-befo... WEB
https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-git-clone

Frequently Asked Questions

What is CVE-2026-65598?
CVE-2026-65598 is a security vulnerability in n8n involving Race Condition in Git Clone Node Allows Authenticated Users to Achieve Remote Code Execution under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition.
Which n8n versions are affected?
Affected versions include releases prior to 1.123.64, 2.30.1, 2.29.8 across affected packages: n8n.
What version fixes CVE-2026-65598?
Upgrading to 1.123.64, 2.30.1, 2.29.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is n8n affected?
Yes, n8n is affected in releases prior to 1.123.64, 2.30.1, 2.29.8. Upgrade your dependency to 1.123.64, 2.30.1, 2.29.8 or later.
What CWE is associated with CVE-2026-65598?
CVE-2026-65598 is classified under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.).
How can I check npm dependencies for CVE-2026-65598?
Run the dependency tree command: 'npm ls n8n'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g3r5-9h93-4j2c",
  "modified" : "2026-07-22T17:56:35Z",
  "published" : "2026-07-22T17:56:35Z",
  "aliases" : [ "CVE-2026-65598" ],
  "summary" : "n8n: Race Condition in Git Clone Node Allows Authenticated Users to Achieve Remote Code Execution",
  "details" : "## Impact\nA TOCTOU race condition in the Git node's `clone` operation lets an authenticated user bypass its path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This plants a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, and since nodes execute JavaScript, this yields arbitrary code execution on the server.\n\nBoth self-hosted and cloud instances are affected, where authenticated users can create and run workflows using the Git node.\n\n## Patches\nUsers should upgrade to the patched version once available to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Disable the Git node by adding `n8n-nodes-base.git` to the `NODES_EXCLUDE` environment variable.\n- Restrict network egress from the n8n instance to prevent connections to attacker-controlled git repositories.\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:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L"
  } ],
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    },
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      } ]
    } ]
  } ],
  "references" : [ {
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  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-65598"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/n8n-io/n8n"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.64"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8"
  }, {
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    "url" : "https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-git-clone"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-367" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-22T17:56:35Z",
    "nvd_published_at" : null
  }
}