{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "realms-shim"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "ses"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:19:30Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "Versions of `realms-shim` prior to 1.2.0 are vulnerable to a Sandbox Breakout. `Reflect.construct` can be used on the sandboxed Function constructor to reach the prototypes of the primal Realm, which may allow an attacker to escape the sandbox and execute arbitrary code.\n\n\n## Recommendation\n\nUpgrade to version 1.2.0 or later.",
  "id": "GHSA-6jg8-7333-554w",
  "modified": "2021-09-02T16:40:48Z",
  "published": "2019-10-04T17:56:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Agoric/realms-shim/security/advisories/GHSA-6jg8-7333-554w"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Agoric/realms-shim"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-6jg8-7333-554w"
    },
    {
      "type": "WEB",
      "url": "https://snyk.io/vuln/SNYK-JS-REALMSSHIM-471680"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1180"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1181"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1182"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1190"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1191"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Sandbox Breakout in realms-shim"
}