{"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","slug":"GHSA-664h-gpgq-h6xx","body":"## Overview\n\n## 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.\n\n## Affected packages\n\n- `n8n < 1.123.55`\n- `n8n >= 2.26.0, < 2.26.2`\n- `n8n >= 2.0.0-rc.0, < 2.25.7`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `n8n 1.123.55`\n- `n8n 2.26.2`\n- `n8n 2.25.7`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}