{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "marky-markdown"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T19:00:30Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "All versions of `marky-markdown` are vulnerable to HTML Injection due to a validation bypass. The package only allows iframes where the source is `youtube.com` but it is possible to bypass the validation with sources where `youtube.com` is the sub-domain, such as `youtube.com.evil.co`. This \n\n\n## Recommendation\n\nThis package is no longer maintained. Please upgrade to `@npmcorp/marky-markdown`",
  "id": "GHSA-pxmp-fwjc-4x7q",
  "modified": "2021-10-04T20:56:09Z",
  "published": "2020-09-03T15:45:23Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://github.com/npm/marky-markdown"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1471"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "HTML Injection in marky-markdown"
}