{"action":"Upgrade n8n to 2.27.4 or later.","affected":[{"fixed":"2.27.4","introduced":"0"}],"component":"n8n","cve_ids":["CVE-2026-65014"],"ecosystem":"npm","epss":0.0059,"exploited":false,"fixed_versions":["2.27.4"],"ghsa_id":"GHSA-33q9-f52j-gc75","id":"tcs_01M5KEVS5QDAXS327TREVR04S9","modified_at":"2026-07-22T22:56:43.824898Z","published_at":"2026-07-22T22:36:10Z","references":["https://osv.dev/vulnerability/GHSA-33q9-f52j-gc75","https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75","https://nvd.nist.gov/vuln/detail/CVE-2026-65014","https://github.com/n8n-io/n8n","https://github.com/n8n-io/n8n/releases/tag/n8n@2.27.4","https://github.com/n8n-io/n8n/releases/tag/n8n@2.28.0","https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-33q9-f52j-gc75","url":"https://osv.dev/vulnerability/GHSA-33q9-f52j-gc75"}],"summary":"n8n: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook"}