Security advisory

{
  "id": "f2cf711b1c43bdcf2cbcd02b97110a61be59967b24d00750bd2c4fd8381d56a3",
  "url": "https://osv.dev/vulnerability/CVE-2020-27387",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-27387",
    "summary": "An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.",
    "evidence": "osv:CVE-2020-27387",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-27387",
      "aliases": [
        "CVE-2020-27387"
      ],
      "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": "59c2843b5df2ac2e78b1d54db4e40dbe082cf233"
                },
                {
                  "last_affected": "5aa34ac4e457a49b83f24a2969593c495f3ed9ad"
                },
                {
                  "fixed": "436b5ab679fd27afa3d99c023dbe103113da4fee"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0-alpha"
                      },
                      {
                        "last_affected": "1.0.0-alpha"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "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"
                  },
                  {
                    "range": [
                      {
                        "fixed": "436b5ab679fd27afa3d99c023dbe103113da4fee"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.0-alpha",
            "1.0.0-beta",
            "v1.0.0-beta",
            "v1.0.0-alpha.8",
            "v1.0.0-alpha.7",
            "v1.0.0-alpha.6",
            "v1.0.0-alpha.5",
            "v1.0.0-alpha.4",
            "v1.0.0-alpha.3",
            "v1.0.0-alpha.2",
            "v1.0.0-alpha"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27387.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:19.116861737Z",
      "provider": "osv",
      "references": [
        "https://github.com/rapid7/metasploit-framework/pull/14340",
        "https://blog.vonahi.io/whats-in-a-re-name/",
        "https://github.com/ttimot24/HorizontCMS/commit/436b5ab679fd27afa3d99c023dbe103113da4fee"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha2:*:*:*:*:*:*",
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha3:*:*:*:*:*:*",
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha4:*:*:*:*:*:*",
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha5:*:*:*:*:*:*",
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha6:*:*:*:*:*:*",
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha7:*:*:*:*:*:*",
              "cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha8:*:*:*:*:*:*"
            ],
            "vendor_product": "horizontcms_project:horizontcms",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "1.0.0-alpha2"
                  },
                  {
                    "last_affected": "1.0.0-alpha2"
                  },
                  {
                    "introduced": "1.0.0-alpha3"
                  },
                  {
                    "last_affected": "1.0.0-alpha3"
                  },
                  {
                    "introduced": "1.0.0-alpha4"
                  },
                  {
                    "last_affected": "1.0.0-alpha4"
                  },
                  {
                    "introduced": "1.0.0-alpha5"
                  },
                  {
                    "last_affected": "1.0.0-alpha5"
                  },
                  {
                    "introduced": "1.0.0-alpha6"
                  },
                  {
                    "last_affected": "1.0.0-alpha6"
                  },
                  {
                    "introduced": "1.0.0-alpha7"
                  },
                  {
                    "last_affected": "1.0.0-alpha7"
                  },
                  {
                    "introduced": "1.0.0-alpha8"
                  },
                  {
                    "last_affected": "1.0.0-alpha8"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-27387",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385027,
  "published_at": "2020-11-05T02:15:12.067+00:00"
}