npm · n8n
n8n: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook
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.
Users should upgrade to the patched version once available to remediate the vulnerability.
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
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Check my repoSources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.