{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "3.0.4"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "81bad8b6649253bd972ac4158816189d38366216"
            }
          ],
          "repo": "https://github.com/monstra-cms/monstra",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "Monstra CMS 3.0.4 allows users to upload arbitrary files, which leads to remote command execution on the server, for example because .php (lowercase) is blocked but .PHP (uppercase) is not.",
  "id": "CVE-2017-18048",
  "modified": "2026-04-01T23:08:52.380148740Z",
  "published": "2018-01-23T06:29:00.213Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/monstra-cms/monstra/issues/426"
    },
    {
      "type": "EVIDENCE",
      "url": "https://blogs.securiteam.com/index.php/archives/3559"
    },
    {
      "type": "EVIDENCE",
      "url": "https://securityprince.blogspot.in/2017/12/monstra-cms-304-arbitrary-file-upload.html"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.exploit-db.com/exploits/43348/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}