CVE-2026-65014

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 v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75	Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:n8n:n8n:::::community:node.js::
	cpe:2.3:a:n8n:n8n:::::enterprise:node.js::

History

No history.

Information

Published : 2026-07-22 12:18

Updated : 2026-07-27 19:00

NVD link : CVE-2026-65014

Mitre link : CVE-2026-65014

CVE.ORG link : CVE-2026-65014

JSON object : View

Products Affected

n8n

n8n

CWE

CWE-306

Missing Authentication for Critical Function

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