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CVE-2021-4436

Status: ModifiedCritical (9.8)—💥 Exploit

The 3DPrint Lite WordPress plugin before 1.9.1.5 does not have any authorisation and does not check the uploaded file in its p3dlite_handle_upload AJAX action , allowing unauthenticated users to upload arbitrary file to the web server. However, there is a .htaccess, preventing the file to be accessed on Web servers such as Apache.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Affected technologies (1)

Wp3dprinting — 3dprint Lite

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-4436",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-4436",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-02-06T18:58:37.574670Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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      },
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      }
    ]
  },
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          "versions": [
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  "published": "2024-02-05T09:15:43.013",
  "references": [
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      "url": "https://wpscan.com/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/",
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      ],
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    },
    {
      "url": "https://wpscan.com/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The 3DPrint Lite WordPress plugin before 1.9.1.5 does not have any authorisation and does not check the uploaded file in its p3dlite_handle_upload AJAX action , allowing unauthenticated users to upload arbitrary file to the web server. However, there is a .htaccess, preventing the file to be accessed on Web servers such as Apache."
    },
    {
      "lang": "es",
      "value": "El complemento 3DPrint Lite de WordPress anterior a 1.9.1.5 no tiene ninguna autorización y no verifica el archivo cargado en su acción p3dlite_handle_upload AJAX, lo que permite a usuarios no autenticados cargar archivos arbitrarios al servidor web. Sin embargo, existe un .htaccess que impide acceder al archivo en servidores web como Apache."
    }
  ],
  "lastModified": "2026-06-17T04:19:45.190",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:wp3dprinting:3dprint_lite:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "65F6B829-EBB0-4DFA-8CAC-EE0BB929B1A7",
              "versionEndExcluding": "1.9.1.5"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "contact@wpscan.com"
}