GHSA-664h-gpgq-h6xx

Source

https://github.com/advisories/GHSA-664h-gpgq-h6xx

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-664h-gpgq-h6xx/GHSA-664h-gpgq-h6xx.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-664h-gpgq-h6xx

Aliases

CVE-2026-56775

Downstream

Published

2026-06-17T13:55:59Z

Modified

2026-07-09T04:11:38Z

Severity

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

Summary

n8n: Wrong OAuth Scope on Evaluation Test Runs Endpoints

Details

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.

Database specific

{
    "cwe_ids":  [
        "CWE-863"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-17T13:55:59Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

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

0 Unknown introduced version / All previous versions are affected

Fixed

1.123.55

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-664h-gpgq-h6xx/GHSA-664h-gpgq-h6xx.json"

npm / n8n

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

2.26.0

Fixed

2.26.2

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-664h-gpgq-h6xx/GHSA-664h-gpgq-h6xx.json"

npm / n8n

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

2.0.0-rc.0

Fixed

2.25.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-664h-gpgq-h6xx/GHSA-664h-gpgq-h6xx.json"