Security advisory

{
  "id": "9a0d8567a6a54b4f69380404b2b12db1807ddfacb3932e8ec86254a9f3e5ba41",
  "url": "https://osv.dev/vulnerability/CVE-2017-18048",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-18048",
    "summary": "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.",
    "evidence": "osv:CVE-2017-18048",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-18048",
      "aliases": [
        "CVE-2017-18048"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/monstra-cms/monstra",
              "type": "GIT",
              "events": [
                {
                  "introduced": "81bad8b6649253bd972ac4158816189d38366216"
                },
                {
                  "last_affected": "81bad8b6649253bd972ac4158816189d38366216"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:monstra:monstra:3.0.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.4"
                      },
                      {
                        "last_affected": "3.0.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.0.4",
            "v3.0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-18048.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:50.896996693Z",
      "provider": "osv",
      "references": [
        "https://github.com/monstra-cms/monstra/issues/426",
        "https://blogs.securiteam.com/index.php/archives/3559",
        "https://securityprince.blogspot.in/2017/12/monstra-cms-304-arbitrary-file-upload.html",
        "https://www.exploit-db.com/exploits/43348/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-18048",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380860,
  "published_at": "2018-01-23T06:29:00.213+00:00"
}