{"cve":"CVE-2026-59206","nvd":{"published":"2026-07-09T16:16:46.323","modified":"2026-10-25T17:10:00.197","status":"Analyzed","description":"n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N","score":7.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L","score":7.1},"cwes":["CWE-1321"],"references":["https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4","https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1","https://github.com/n8n-io/n8n/security/advisories/GHSA-75qm-gp28-rcq9"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-59206","score":0.0066,"percentile":0.51306,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-75qm-gp28-rcq9","url":"https://osv.dev/vulnerability/GHSA-75qm-gp28-rcq9","summary":"n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration","modified":"2026-07-22T22:00:27.033462865Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<1.123.61"],"fixed":["1.123.61"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.28.0 <2.28.1"],"fixed":["2.28.1"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.0.0-rc.0 <2.27.4"],"fixed":["2.27.4"]}]}],"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."]}