{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.2.1-rc0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "lazysizes"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.1-rc1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T19:01:17Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Versions of `lazysizes` prior to 5.2.1-rc1 are vulnerable to Cross-Site Scripting.  The `video-embed` plugin fails to sanitize the following attributes: data-vimeo, `data-vimeoparams`, `data-youtube` and `data-ytparams`. This allows attackers to execute arbitrary JavaScript in a victim\u0027s browser if the attacker has control over the vulnerable attributes.\n\n\n## Recommendation\n\nUpgrade to version 5.2.1-rc1 or later.",
  "id": "GHSA-w4vp-3mq7-7v82",
  "modified": "2020-08-31T19:01:17Z",
  "published": "2020-09-03T15:49:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/aFarkas/lazysizes/issues/764"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1493"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Cross-Site Scripting in lazysizes"
}