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CVE-2021-42668

Status: ModifiedCritical (9.8)—💥 PoC

A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter in the my_classmates.php web page.. As a result, an attacker can extract sensitive data from the web server and in some cases can use this vulnerability in order to get a remote code execution on the remote web server.

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.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Engineers Online Portal Project — Engineers Online Portal

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-42668",
  "cveTags": [],
  "metrics": {
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV31": [
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  "published": "2021-11-05T13:15:09.113",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-89"
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  ],
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    {
      "lang": "en",
      "value": "A SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the id parameter in the my_classmates.php web page.. As a result, an attacker can extract sensitive data from the web server and in some cases can 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 en la página web my_classmates.php. Como resultado, un atacante puede extraer datos confidenciales del servidor web y en algunos casos puede usar esta vulnerabilidad para conseguir una ejecución de código remota en el servidor web remoto"
    }
  ],
  "lastModified": "2026-06-17T04:09:56.450",
  "configurations": [
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            }
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  "sourceIdentifier": "cve@mitre.org"
}