Security advisory

{
  "id": "83641fb9f6c47e1370ff7538f95e9276e8217a628bf7383e98e1fabed0e7e694",
  "url": "https://osv.dev/vulnerability/CVE-2018-14028",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-14028",
    "summary": "In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.",
    "evidence": "osv:CVE-2018-14028",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-14028",
      "aliases": [
        "CVE-2018-14028"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wordpress/wordpress",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d1802a68ec7a3536f744d45afb72660e4fef0292"
                },
                {
                  "last_affected": "d1802a68ec7a3536f744d45afb72660e4fef0292"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wordpress:wordpress:4.9.7:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.9.7"
                      },
                      {
                        "last_affected": "4.9.7"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.9.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-14028.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/wordpress/wordpress-develop",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c561bbe127a7b92979e318b8a0f6a763e19e5108"
                },
                {
                  "last_affected": "c561bbe127a7b92979e318b8a0f6a763e19e5108"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wordpress:wordpress:4.9.7:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.9.7"
                      },
                      {
                        "last_affected": "4.9.7"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.9.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-14028.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:36.469414801Z",
      "provider": "osv",
      "references": [
        "https://core.trac.wordpress.org/ticket/44710",
        "https://github.com/rastating/wordpress-exploit-framework/pull/52",
        "https://rastating.github.io/unrestricted-file-upload-via-plugin-uploader-in-wordpress/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-14028",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 433982,
  "published_at": "2018-08-10T16:29:00.343+00:00"
}