{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.123.80"
              },
              {
                "introduced": "2.0.0"
              },
              {
                "fixed": "2.39.6"
              },
              {
                "introduced": "2.40.0"
              },
              {
                "fixed": "2.40.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "108c7163f89b0dfdb149c0b596f896dce257a7fa"
            },
            {
              "introduced": "a8ecda44f7627630bc8b78cf671405157ad41c4f"
            },
            {
              "fixed": "c6a01e289540971c4d0bfd8b91ee6f8438d66394"
            },
            {
              "introduced": "caff5b7013893a3c04f0096e4e7c8d8591d4d1a2"
            },
            {
              "fixed": "44b8b16267145fdfda66ab656df6e89b32ce69d4"
            }
          ],
          "repo": "https://github.com/n8n-io/n8n",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hwv9-jhc7-f7c4"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103245.json"
  },
  "details": "n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 fail to verify the x-webflow-signature HMAC in the Webflow Trigger node webhook handler. Unauthenticated attackers can send forged webhook requests with attacker-controlled payloads to trigger workflows and manipulate downstream actions like record creation or API calls.",
  "id": "CVE-2026-103245",
  "modified": "2026-10-03T03:30:27.911553485Z",
  "published": "2026-10-01T10:41:52.707Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103245.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-hwv9-jhc7-f7c4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103245"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-missing-webhook-signature-verification"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n before 1.123.80, 2.39.6, and 2.40.1 Missing Webhook Signature Verification"
}