---
id: GHSA-664h-gpgq-h6xx
title: 'n8n: Wrong OAuth Scope on Evaluation Test Runs Endpoints'
summary: 'n8n: Wrong OAuth Scope on Evaluation Test Runs Endpoints'
severity: medium
cvss: 5.4
cwe:
  - CWE-863
vendor: n8n
product: n8n
ecosystem: npm
affected:
  - n8n < 1.123.55
  - 'n8n >= 2.26.0, < 2.26.2'
  - 'n8n >= 2.0.0-rc.0, < 2.25.7'
patched:
  - n8n 1.123.55
  - n8n 2.26.2
  - n8n 2.25.7
published: '2026-06-17'
updated: '2026-06-17'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-664h-gpgq-h6xx'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-664h-gpgq-h6xx'
  - url: 'https://github.com/advisories/GHSA-664h-gpgq-h6xx'
tags:
  - ghsa
  - npm
ingestedAt: '2026-06-29T14:31:47.446Z'
---

## Overview

## 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.

## Affected packages

- `n8n < 1.123.55`
- `n8n >= 2.26.0, < 2.26.2`
- `n8n >= 2.0.0-rc.0, < 2.25.7`

## Remediation

Upgrade to a patched release:

- `n8n 1.123.55`
- `n8n 2.26.2`
- `n8n 2.25.7`