CVE-2026-56775
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
N8n
PublishedJul 8, 2026
First seenJul 8, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- n8n n8n1.123.55, 2.25.7, 2.26.2 or later
- n8n1.123.55, 2.26.2, 2.25.7 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| n8n n8n | v < 1.123.55, 2.0.0 ≤ v < 2.25.7, 2.26.0 ≤ v < 2.26.2 | 1.123.55, 2.25.7, 2.26.2 |
| n8nnpm | v < 1.123.55, 2.26.0 ≤ v < 2.26.2, 2.0.0-rc.0 ≤ v < 2.25.7 | 1.123.55, 2.26.2, 2.25.7 |
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