GHSA-h9fm-xcv2-qfw3

Source

https://github.com/advisories/GHSA-h9fm-xcv2-qfw3

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h9fm-xcv2-qfw3/GHSA-h9fm-xcv2-qfw3.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-h9fm-xcv2-qfw3

Withdrawn

2026-07-22T22:32:48Z

Published

2026-07-22T12:32:17Z

Modified

2026-07-22T22:46:08Z

Severity

6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

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

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This advisory has been withdrawn because it is a duplicate of GHSA-33q9-f52j-gc75.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.

Database specific

{
    "cwe_ids":  [
        "CWE-306"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-22T22:32:48Z",
    "nvd_published_at":  "2026-07-22T12:18:18Z",
    "severity":  "MODERATE"
}

References

Affected packages

npm / n8n

Package

Name: n8n; View open source insights on deps.dev
Purl: pkg:npm/n8n

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Database specific

last_known_affected_version_range

"< 2.27.4"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h9fm-xcv2-qfw3/GHSA-h9fm-xcv2-qfw3.json"