GHSA-664h-gpgq-h6xx: n8n Wrong OAuth Scope On Evaluation Vulnerability

MODERATE
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CVSS 5.4
CWE-863
Published
Advisory Summary

GHSA-664h-gpgq-h6xx is a MODERATE (CVSS 5.4) wrong oauth scope on evaluation vulnerability (CWE-863: Incorrect Authorization) affecting n8n libraries in the npm ecosystem. The issue involves wrong oauth scope on evaluation test runs endpoints. Remediation is available by upgrading affected packages to version 1.123.55, 2.26.2, 2.25.7.

GHSA-664h-gpgq-h6xx at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-664h-gpgq-h6xx
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-863: Incorrect Authorization
Affected Product n8n
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix GHSA-664h-gpgq-h6xx

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: 1.123.55 
npm install n8n@1.123.55
n8n fixed: 2.26.2 
npm install n8n@2.26.2
n8n fixed: 2.25.7 
npm install n8n@2.25.7
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 GHSA-664h-gpgq-h6xx, 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 1.123.55), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform 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 Three mutating endpoints in the evaluation test runs controller authorized state-changing actions using `workflow:read` instead of the action-appropriate `workflow:execute` scope. An authenticated user with `project:viewer` role on a project could start new evaluation test runs, cancel in-flight runs, and delete run records for workflows they only had read access to. This issue only affects instances with Advanced Permissions (Enterprise/Cloud) where projects and viewer roles are in use. ## Patches The issue has been fixed in n8n versions 1.123.55, 2.25.7, and 2.26.2. 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: - Restrict project membership to fully trusted users only. - Avoid granting viewer access to projects containing sensitive workflows. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

GHSA-664h-gpgq-h6xx Affected n8n Versions

3 component(s)
Fixed Versions:
1.123.552.26.22.25.7
Product / Package Ecosystem Affected Versions Fixed Version
n8n
npm/n8n
npm
< 1.123.55
1.123.55
n8n
npm/n8n
npm
≥ 2.26.0
< 2.26.2
2.26.2
n8n
npm/n8n
npm
≥ 2.0.0-rc.0
< 2.25.7
2.25.7

References

GitHub Advisory / Wiki ADVISORY
https://github.com/n8n-io/n8n/security/advisories/GHSA-664h-gpgq-h6xx
n8n Source Repository REPOSITORY
https://github.com/n8n-io/n8n

Frequently Asked Questions

What is GHSA-664h-gpgq-h6xx?
GHSA-664h-gpgq-h6xx is a security vulnerability in n8n involving Wrong OAuth Scope on Evaluation Test Runs Endpoints under CWE-863: Incorrect Authorization.
Which n8n versions are affected?
Affected versions include releases prior to 1.123.55, 2.26.2, 2.25.7 across affected packages: n8n.
What version fixes GHSA-664h-gpgq-h6xx?
Upgrading to 1.123.55, 2.26.2, 2.25.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is n8n affected?
Yes, n8n is affected in releases prior to 1.123.55, 2.26.2, 2.25.7. Upgrade your dependency to 1.123.55, 2.26.2, 2.25.7 or later.
What is the CVSS score of GHSA-664h-gpgq-h6xx?
GHSA-664h-gpgq-h6xx has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
What CWE is associated with GHSA-664h-gpgq-h6xx?
GHSA-664h-gpgq-h6xx is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check npm dependencies for GHSA-664h-gpgq-h6xx?
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-664h-gpgq-h6xx",
  "modified" : "2026-06-17T13:55:59Z",
  "published" : "2026-06-17T13:55:59Z",
  "aliases" : [ ],
  "summary" : "n8n: Wrong OAuth Scope on Evaluation Test Runs Endpoints",
  "details" : "## Impact\nThree mutating endpoints in the evaluation test runs controller authorized state-changing actions using `workflow:read` instead of the action-appropriate `workflow:execute` scope. An authenticated user with `project:viewer` role on a project could start new evaluation test runs, cancel in-flight runs, and delete run records for workflows they only had read access to.\n\nThis issue only affects instances with Advanced Permissions (Enterprise/Cloud) where projects and viewer roles are in use.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.55, 2.25.7, and 2.26.2. 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- Restrict project membership to fully trusted users only.\n- Avoid granting viewer access to projects containing sensitive workflows.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.123.55"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.26.0"
      }, {
        "fixed" : "2.26.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0-rc.0"
      }, {
        "fixed" : "2.25.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/security/advisories/GHSA-664h-gpgq-h6xx"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/n8n-io/n8n"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-17T13:55:59Z",
    "nvd_published_at" : null
  }
}