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CVE-2021-42666

Estado: ModificadaAlta (8.8)—💥 PoC

A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter to quiz_question.php, which could let a malicious user extract sensitive data from the web server and in some cases use this vulnerability in order to get a remote code execution on the remote web server.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Engineers Online Portal Project — Engineers Online Portal

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-42666",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-11-05T13:15:08.887",
  "references": [
    {
      "url": "https://github.com/TheHackingRabbi/CVE-2021-42666",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
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      "tags": [
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
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    {
      "url": "https://github.com/TheHackingRabbi/CVE-2021-42666",
      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter to quiz_question.php, which could let a malicious user extract sensitive data from the web server and in some cases use this vulnerability in order to get a remote code execution on the remote web server."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de Inyección SQL en Sourcecodester Engineers Online Portal en PHP por medio del parámetro id del archivo quiz_question.php, que podría permitir a un usuario malicioso extraer datos confidenciales del servidor web y en algunos casos usar esta vulnerabilidad para conseguir una ejecución de código remota en el servidor web remoto"
    }
  ],
  "lastModified": "2026-06-17T04:09:56.210",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:engineers_online_portal_project:engineers_online_portal:1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EE2C0236-1BC6-45DD-B5A5-1FE81BD75296"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}