CVE-2026-56775
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 4.0
- 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 5.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-29)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- n8n:n8n
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-664h-gpgq-h6xx | npm | n8n | <1.123.55 | 1.123.55 |
| GHSA-664h-gpgq-h6xx | npm | n8n | >=2.26.0 <2.26.2 | 2.26.2 |
| GHSA-664h-gpgq-h6xx | npm | n8n | >=2.0.0-rc.0 <2.25.7 | 2.25.7 |