{"action":"Upgrade n8n to 2.29.8 or later.","affected":[{"fixed":"2.30.1","introduced":"2.30.0"},{"fixed":"2.29.8","introduced":"0"}],"component":"n8n","cve_ids":["CVE-2026-65594"],"ecosystem":"npm","epss":0.0044,"exploited":false,"fixed_versions":["2.30.1","2.29.8"],"ghsa_id":"GHSA-q5xf-xhwf-cwqf","id":"tcs_01M5KG5BKPA17E95NR81AH4VQT","modified_at":"2026-07-22T22:56:43.664368Z","published_at":"2026-07-22T22:31:01Z","references":["https://osv.dev/vulnerability/GHSA-q5xf-xhwf-cwqf","https://github.com/n8n-io/n8n/security/advisories/GHSA-q5xf-xhwf-cwqf","https://nvd.nist.gov/vuln/detail/CVE-2026-65594","https://github.com/n8n-io/n8n","https://github.com/n8n-io/n8n/releases/tag/n8n@2.29.8","https://github.com/n8n-io/n8n/releases/tag/n8n@2.30.1","https://www.vulncheck.com/advisories/n8n-before-missing-oauth-authorization-check"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-q5xf-xhwf-cwqf","url":"https://osv.dev/vulnerability/GHSA-q5xf-xhwf-cwqf"},{"source":"nvd","source_id":"CVE-2026-65594","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65594"}],"summary":"n8n: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check"}