CVE-2026-56775
CVE-2026-56775 · n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints
This page contains facts from public vulnerability sources. Check the original advisory before updating.
n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization vulnerability in three mutating evaluation test-run endpoints that authorize state-changing actions using the workflow:read scope instead of the action-appropriate workflow:execute scope. On instances using Advanced Permissions (Enterprise/Cloud) with projects and viewer roles, an authenticated user with the project:viewer role can start new evaluation test runs, cancel in-flight runs, and delete run records for workflows they only have read access to.
CVSS 5.3 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
n8n
- Versions
- ≥ 0, < 1.123.55: Affected (semver)
- 1.123.55: Not affected (semver)
Update to 1.123.55
n8n
- Versions
- ≥ 0, < 2.26.2: Affected (semver)
- 2.26.2: Not affected (semver)
Update to 2.26.2
n8n
- Versions
- ≥ 0, < 2.25.7: Affected (semver)
- 2.25.7: Not affected (semver)
Update to 2.25.7
n8n npm
- Affected ranges
- SEMVER: < 1.123.55
Update to 1.123.55
n8n npm
- Affected ranges
- SEMVER: ≥ 2.26.0, < 2.26.2
Update to 2.26.2
n8n npm
- Affected ranges
- SEMVER: ≥ 2.0.0-rc.0, < 2.25.7
Update to 2.25.7