{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "sapper"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.27.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T19:01:20Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "Versions of `sapper` prior to 0.27.11 are vulnerable to Path Traversal. It is possible to access sensitive files on the server through HTTP requests containing URL-encoded `../`.  \n\nYou may test a `sapper` application running in prod mode with `curl -vvv http://localhost:3000/client/750af05c3a69ddc6073a/%252e%252e/%252e%252e/%252e%252e/%252e%252e/%252e%252e/%252e%252e/%252e%252e/%252e%252e/etc/passwd`.\n\n\n## Recommendation\n\nUpgrade to version 0.27.11 or later.",
  "id": "GHSA-f3vw-587g-r29g",
  "modified": "2020-08-31T19:01:20Z",
  "published": "2020-09-03T15:50:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/1494"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Path Traversal in sapper"
}