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CVE-2025-3634

Estado: AnalizadaMedia (4.3)—

A security vulnerability was discovered in Moodle that allows students to enroll themselves in courses without completing all the necessary safety checks. Specifically, users can sign up for courses prematurely, even if they haven't finished two-step verification processes.

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)

Moodle — Moodle

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-3634",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-3634",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-25T14:23:56.228314Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "patrick@puiterwijk.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "patrick@puiterwijk.org",
      "affectedData": [
        {
          "versions": [
            {
              "status": "affected",
              "version": "4.5.0",
              "lessThan": "4.5.4",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.4.0",
              "lessThan": "4.4.8",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.3.0",
              "lessThan": "4.3.12",
              "versionType": "semver"
            }
          ],
          "packageName": "moodle",
          "collectionURL": "https://git.moodle.org",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-04-25T14:15:22.917",
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2025-3634",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "patrick@puiterwijk.org"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2359707",
      "tags": [
        "Issue Tracking"
      ],
      "source": "patrick@puiterwijk.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "patrick@puiterwijk.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security vulnerability was discovered in Moodle that allows students to enroll themselves in courses without completing all the necessary safety checks. Specifically, users can sign up for courses prematurely, even if they haven't finished two-step verification processes."
    },
    {
      "lang": "es",
      "value": "Se descubrió una vulnerabilidad de seguridad en Moodle que permite a los estudiantes inscribirse en cursos sin completar todas las comprobaciones de seguridad necesarias. En concreto, los usuarios pueden inscribirse en cursos de forma anticipada, incluso sin haber completado la verificación en dos pasos."
    }
  ],
  "lastModified": "2026-06-17T09:20:21.640",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "4.3.12",
              "versionStartIncluding": "4.3.0"
            },
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              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "4.4.8",
              "versionStartIncluding": "4.4.0"
            },
            {
              "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F12B5C6F-A83C-488C-9C26-3C9A61F93618",
              "versionEndExcluding": "4.5.4",
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "patrick@puiterwijk.org"
}