Security advisory

{
  "id": "e1097077ef7748f3bb541b8464b264e5737f4a1d3930c02e66012c245464491c",
  "url": "https://osv.dev/vulnerability/CVE-2020-28693",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-28693",
    "summary": "An unrestricted file upload issue in HorizontCMS 1.0.0-beta allows an authenticated remote attacker to upload PHP code through a zip file by uploading a theme, and executing the PHP file via an HTTP GET request to /themes/",
    "evidence": "osv:CVE-2020-28693",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-28693",
      "aliases": [
        "CVE-2020-28693"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ttimot24/horizont-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5aa34ac4e457a49b83f24a2969593c495f3ed9ad"
                },
                {
                  "last_affected": "5aa34ac4e457a49b83f24a2969593c495f3ed9ad"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:beta:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0-beta"
                      },
                      {
                        "last_affected": "1.0.0-beta"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.0-beta",
            "v1.0.0-beta"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28693.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:08.772039353Z",
      "provider": "osv",
      "references": [
        "https://github.com/ttimot24/HorizontCMS/issues/21",
        "https://github.com/jkana/HorizontCMS-1.0.0-beta-shell-upload"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-28693",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384204,
  "published_at": "2020-11-16T21:15:13.69+00:00"
}