{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "underscore.string"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2019-06-14T16:24:01Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "Versions of `underscore.string` prior to *3.3.5* are vulnerable to Regular Expression Denial of Service (ReDoS).\n\nThe function `unescapeHTML` is vulnerable to ReDoS due to an overly-broad regex. The slowdown is approximately 2s for 50,000 characters but grows exponentially with larger inputs.\n\n\n## Recommendation\n\nUpgrade to version 3.3.5 or higher.",
  "id": "GHSA-v2p6-4mp7-3r9v",
  "modified": "2020-08-31T18:34:16Z",
  "published": "2019-06-14T16:26:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/epeli/underscore.string/issues/510"
    },
    {
      "type": "WEB",
      "url": "https://github.com/epeli/underscore.string/pull/517"
    },
    {
      "type": "WEB",
      "url": "https://github.com/epeli/underscore.string/commit/f486cd684c94c12db48b45d52b1472a1b9661029"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/745"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Regular Expression Denial of Service in underscore.string"
}