GHSA-h9fm-xcv2-qfw3

Summary

Duplicate Advisory: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook

Severity

medium

CWE

CWE-306

Published

2026-07-22

Updated

2026-07-22

Advisory details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-33q9-f52j-gc75. This link is maintained to preserve external references.

Original 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.

References

• https://github.com/advisories/GHSA-h9fm-xcv2-qfw3
• https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75
• https://nvd.nist.gov/vuln/detail/CVE-2026-65014
• https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook

Related advisories

• CVE-2026-65014 — medium · npm/n8n
• CVE-2026-44791 — critical · npm/n8n
• CVE-2026-44790 — critical · npm/n8n
• CVE-2026-44789 — critical · npm/n8n
• CVE-2026-42232 — critical · npm/n8n
• CVE-2026-42231 — critical · npm/n8n
• CVE-2025-68613 — critical · npm/n8n
• CVE-2026-86083 — high · npm/n8n

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