medium5.3
CVE-2026-65014
n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${restEndpoint}/test-webhook/:id endpoint before authentication middleware is …
Impact
n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | n8n | < 2.27.4 | 2.27.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| N8n | N8n | from 2.27.0 before 2.27.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-33q9-f52j-gc75
- https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75
- https://nvd.nist.gov/vuln/detail/CVE-2026-65014
- https://github.com/n8n-io/n8n/releases/tag/n8n@2.27.4
- https://github.com/n8n-io/n8n/releases/tag/n8n@2.28.0
- https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook