{"cve":"CVE-2026-56775","nvd":{"published":"2026-07-08T14:17:17.420","modified":"2026-10-29T19:17:23.020","status":"Analyzed","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.","cvss_v4":{"vector":"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","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","score":5.4},"cwes":["CWE-863"],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-664h-gpgq-h6xx","https://www.vulncheck.com/advisories/n8n-incorrect-oauth-scope-validation-in-evaluation-test-runs-endpoints"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-29T19:44:52.144667018+00:00"},"epss":{"cve":"CVE-2026-56775","score":0.00302,"percentile":0.22908,"date":"2026-10-29"},"kev":null,"osv":[{"id":"GHSA-664h-gpgq-h6xx","url":"https://osv.dev/vulnerability/GHSA-664h-gpgq-h6xx","summary":"n8n: Wrong OAuth Scope on Evaluation Test Runs Endpoints","modified":"2026-07-09T04:11:38.324938832Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<1.123.55"],"fixed":["1.123.55"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.26.0 <2.26.2"],"fixed":["2.26.2"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.0.0-rc.0 <2.25.7"],"fixed":["2.25.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}