ghsa-q5wm-mgqx-fv2f

{
  "affected": [
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-q5wm-mgqx-fv2f/GHSA-q5wm-mgqx-fv2f.json"
      },
      "package": {
        "ecosystem": "npm",
        "name": "n8n",
        "purl": "pkg:npm/n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.38.0"
            },
            {
              "fixed": "2.38.2"
            }
          ],
          "type": "SEMVER"
        }
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-q5wm-mgqx-fv2f/GHSA-q5wm-mgqx-fv2f.json"
      },
      "package": {
        "ecosystem": "npm",
        "name": "n8n",
        "purl": "pkg:npm/n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.37.7"
            }
          ],
          "type": "SEMVER"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-86074"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-10T21:18:48Z",
    "nvd_published_at": "2026-09-08T18:21:14Z",
    "severity": "MODERATE"
  },
  "details": "## Impact\n\nInstance AI credential setup accepted a credential test/verification URL without checking it matched the workflow node's origin. Exfiltration required the user to actively inject an attacker-controlled URL into the setup flow. The patch derives the credential destination from the node's own URL and confines authenticated requests, redirects and probes to that origin.\n\n## Patches\n\nThe issue has been fixed in n8n versions 2.38.2 and 2.37.7. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Disable the Instance AI module by removing `instance-ai` from the `N8N_ENABLED_MODULES` environment variable if it is not required.\n- Restrict n8n instance access to fully trusted users only.\n- Rotate any third-party API credentials that were set up using the Instance AI credential-setup flow on affected versions.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.",
  "id": "GHSA-q5wm-mgqx-fv2f",
  "modified": "2026-09-10T21:30:04.789468256Z",
  "published": "2026-09-10T21:18:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-q5wm-mgqx-fv2f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86074"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/n8n-io/n8n"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content"
}