Security advisory

{
  "id": "665f3c83ecac24ab39df838ebc723e40ba6a244fe45db4afccb2c907a08b148e",
  "url": "https://osv.dev/vulnerability/CVE-2021-43421",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-43421",
    "summary": "A File Upload vulnerability exists in Studio-42 elFinder 2.0.4 to 2.1.59 via connector.minimal.php, which allows a remote malicious user to upload arbitrary files and execute PHP code.",
    "evidence": "osv:CVE-2021-43421",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-43421",
      "aliases": [
        "CVE-2021-43421",
        "GHSA-x4jx-hjwf-gc99"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/studio-42/elfinder",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fa17915bfe2719869b1a383b216be2cdab2ecb63"
                },
                {
                  "last_affected": "06ada3132cefd057e1d89cb016f8c82473d420d4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:std42:elfinder:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.4"
                      },
                      {
                        "last_affected": "2.1.59"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43421.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:07.877310584Z",
      "provider": "osv",
      "references": [
        "https://twitter.com/infosec_90/status/1455180286354919425",
        "https://github.com/Studio-42/elFinder/issues/3429"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-43421",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384885,
  "published_at": "2022-04-07T17:15:08.72+00:00"
}