{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-01-06T19:25:24Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Impact\nA regex denial of service (ReDoS) vulnerability was discovered in a dependency of the `codesample` plugin. The vulnerability allowed poorly formed ruby code samples to lock up the browser while performing syntax highlighting. This impacts users of the `codesample` plugin using TinyMCE 5.5.1 or lower.\n\n### Patches\nThis vulnerability has been patched in TinyMCE 5.6.0 by upgrading to a version of the dependency without the vulnerability.\n\n### Workarounds\nTo work around this vulnerability, either:\n- Upgrade to TinyMCE 5.6.0 or higher\n- Disable the `codesample` plugin\n- Disable ruby code samples using the [codesample_languages](https://www.tiny.cloud/docs/plugins/opensource/codesample/#exampleusingcodesample_languages) setting\n- Override the PrismJS syntax highlighter to version 1.21.0 or higher using the [codesample_global_prismjs](https://www.tiny.cloud/docs/plugins/opensource/codesample/#codesample_global_prismjs) setting\n\n### Acknowledgements\nTiny Technologies would like to thank Erik Krogh Kristensen at GitHub for discovering this vulnerability.\n\n### References\nhttps://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in the [TinyMCE repo](http://github.com/tinymce/tinymce/issues)\n* Email us at [infosec@tiny.cloud](mailto:infosec@tiny.cloud)",
  "id": "GHSA-h96f-fc7c-9r55",
  "modified": "2021-01-06T19:25:24Z",
  "published": "2021-01-06T19:25:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tinymce/tinymce/security/advisories/GHSA-h96f-fc7c-9r55"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/package/tinymce"
    },
    {
      "type": "WEB",
      "url": "https://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Regex denial of service vulnerability in codesample plugin"
}