En resumen
- CVE-2026-65014 es una vulnerabilidad MEDIO (CVSS 5.3) que afecta a n8n (n8n), n8n.
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.59%, mayor que el 48.2% de las vulnerabilidades.
- Solución: actualizar a 2.27.4 o posterior.
| Package | Affected versions | Patched versions |
|---|
| n8n | ≥ 2.27.0, < 2.27.4
| 2.27.4
|
| n8n npm | < 2.27.4
| 2.27.4
|
Description
Impact
The DELETE /${restEndpoint}/test-webhook/:id route is registered before the authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration.
The impact is limited to disrupting in-progress test sessions. Production webhooks, persistent workflow state, and stored data are not affected.
Patches
Users should upgrade to the patched version once available to remediate the vulnerability.
Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Restrict network access to the n8n instance to fully trusted users only.
- Place the n8n instance behind a reverse proxy or firewall that requires authentication before reaching the REST API.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
NVD description
n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${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.
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