{"id":"GHSA-33q9-f52j-gc75","revision":"122840e308ed45a49adce7d7b93f4a56","records":[{"revision":"122840e308ed45a49adce7d7b93f4a56","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-33q9-f52j-gc75","aliases":["CVE-2026-65014"],"title":"n8n: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook","description":"## Impact\nThe `DELETE /${restEndpoint}/test-webhook/:id` route is registered before the authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. \n\nThe impact is limited to disrupting in-progress test sessions. Production webhooks, persistent workflow state, and stored data are not affected.\n\n## Patches\nUsers should upgrade to the patched version once available to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict network access to the n8n instance to fully trusted users only.\n- Place the n8n instance behind a reverse proxy or firewall that requires authentication before reaching the REST API.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","state":0,"publishedAt":"2026-07-22T22:36:10+00:00","modifiedAt":"2026-07-22T22:56:43.824898+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.27.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["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"],"sourceUrl":"https://github.com/advisories/GHSA-33q9-f52j-gc75","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-33q9-f52j-gc75","identifiers":["GHSA-33q9-f52j-gc75","CVE-2026-65014"]},"retained":false,"historicalAffected":[]}],"coverage":[]}