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CVE-2020-36845

Estado: AnalizadaMedia (6.1)—

The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.

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).

Tecnologías afectadas (1)

Knowbe4 — Security Awareness Training

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-36845",
  "cveTags": [
    {
      "tags": [
        "exclusively-hosted-service"
      ],
      "sourceIdentifier": "cve@mitre.org"
    }
  ],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2020-36845",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-21T02:17:53.682087Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "KnowBe4",
          "product": "Security Awareness Training",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2020-01-10",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-04-20T22:15:29.690",
  "references": [
    {
      "url": "https://www.doyler.net/security-not-included/knowbe4-vulnerabilities",
      "tags": [
        "Exploit"
      ],
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@mitre.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL."
    },
    {
      "lang": "es",
      "value": "La aplicación KnowBe4 Security Awareness Training antes de 2020-01-10 contiene una función de redirección que no valida la URL de destino antes de redirigir. La respuesta tiene un elemento script que establece window.location.href a una URL HTTPS arbitraria."
    }
  ],
  "lastModified": "2026-06-17T03:16:18.897",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:knowbe4:security_awareness_training:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "638B323A-67CD-4727-9D51-15E6FA07FF94",
              "versionEndExcluding": "2020-01-10"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}