n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${restEndpoint}/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The impact is limited to disrupting in-progress test sessions; production webhooks, persistent workflow state, and stored data are not affected.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n8n-io | n8n | unaffected |
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| n8n-io | n8n | unaffected |
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Advisories
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Fixes
Solution
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Workaround
No workaround given by the vendor.
References
History
Wed, 22 Jul 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${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. | |
| Title | n8n before 2.28.0 Authentication Bypass via test-webhook | |
| First Time appeared |
N8n
N8n n8n |
|
| Weaknesses | CWE-306 | |
| CPEs | cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
N8n
N8n n8n |
|
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-22T12:26:12.006Z
Reserved: 2026-07-21T11:32:54.897Z
Link: CVE-2026-65014
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses