{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "handlebars"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "handlebars"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T18:55:11Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Versions of `handlebars` prior to 3.0.8 or 4.5.3 are vulnerable to Arbitrary Code Execution. The package\u0027s lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript in the system. It is due to an incomplete fix for a [previous issue](https://www.npmjs.com/advisories/1316). This vulnerability can be used to run arbitrary code in a server processing Handlebars templates or on a victim\u0027s browser (effectively serving as Cross-Site Scripting).\n\n\n## Recommendation\n\nUpgrade to version 3.0.8, 4.5.3 or later.",
  "id": "GHSA-q2c6-c6pm-g3gh",
  "modified": "2020-08-31T18:55:11Z",
  "published": "2020-09-04T15:07:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1324"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Arbitrary Code Execution in handlebars"
}