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CVE-2021-36568

Estado: ModificadaMedia (5.4)—

En determinados productos Moodle después de crear un curso, es posible añadir en un "Topic" arbitrario un recurso, en este caso una "Database" con el tipo "Text" donde sus valores "Field name" y "Field description" son vulnerables a un ataque de tipo Cross Site Scripting (XSS) Almacenado. Esto afecta a Moodle versión 3.11 y Moodle versión 3.10.4 y Moodle versión 3.9.7

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 (2)

Fedoraproject — FedoraMoodle — Moodle

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-36568",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-09-13T22:15:08.793",
  "references": [
    {
      "url": "https://blog.hackingforce.com.br/en/cve-2021-36568/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://drive.google.com/drive/folders/1_fO4BKpmD3avGYHSzvIXWs5owqVYgB1s?usp=sharing",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERQ3NHVOK4ZXT4MS4LBQ2ZJHTON3LIMW/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRI4ETMQ4DJR3TZUOOGPBQ32RBD5LNGC/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://blog.hackingforce.com.br/en/cve-2021-36568/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://drive.google.com/drive/folders/1_fO4BKpmD3avGYHSzvIXWs5owqVYgB1s?usp=sharing",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERQ3NHVOK4ZXT4MS4LBQ2ZJHTON3LIMW/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRI4ETMQ4DJR3TZUOOGPBQ32RBD5LNGC/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7."
    },
    {
      "lang": "es",
      "value": "En determinados productos Moodle después de crear un curso, es posible añadir en un \"Topic\" arbitrario un recurso, en este caso una \"Database\" con el tipo \"Text\" donde sus valores \"Field name\" y \"Field description\" son vulnerables a un ataque de tipo Cross Site Scripting (XSS) Almacenado. Esto afecta a Moodle versión 3.11 y Moodle versión 3.10.4 y Moodle versión 3.9.7"
    }
  ],
  "lastModified": "2026-06-17T03:58:56.300",
  "configurations": [
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            },
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  "sourceIdentifier": "cve@mitre.org"
}