PT-2026-63344 · N8N Io · N8N

CVE-2026-65014 · Published 2026-07-22 · Updated 2026-07-22

Mitre

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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.

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-65014

Affected Products

N8N

References · 3

• https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-65014 · Security Note
• https://vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook · Note