{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*",
              "cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "2.27.0"
              },
              {
                "fixed": "2.27.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "f4871fea29cb99720dbcecbcb276839663356c11"
            },
            {
              "fixed": "a4d0dfce294064026be1a6a246e6da348fea1485"
            }
          ],
          "repo": "https://github.com/n8n-io/n8n",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-33q9-f52j-gc75"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65014.json"
  },
  "details": "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.",
  "id": "CVE-2026-65014",
  "modified": "2026-07-29T03:30:09.561393231Z",
  "published": "2026-07-22T11:21:37.350Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65014.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65014"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n before 2.28.0 Authentication Bypass via test-webhook"
}