{"cve":"CVE-2026-65014","nvd":{"published":"2026-07-22T12:18:18.453","modified":"2026-10-24T17:10:00.220","status":"Analyzed","description":"n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${restEndpoint}/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The impact is limited to disrupting in-progress test sessions; production webhooks, persistent workflow state, and stored data are not affected.","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":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-306"],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75","https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-65014","score":0.0059,"percentile":0.47919,"date":"2026-10-25"},"kev":null,"osv":[{"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","modified":"2026-07-22T22:56:43.824898Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<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."]}