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CVE-2026-63238

Estado: AplazadaMedia (6.5)—

An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated attacker to take over any account, including administrator accounts, by supplying a valid user UUID without providing primary credentials via the 2FA validation endpoint.

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Koollab — LMSAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-63238",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63238",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-29T14:24:49.887591Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
      "affectedData": [
        {
          "vendor": "Three Learning",
          "product": "Koollab LMS",
          "versions": [
            {
              "status": "affected",
              "version": "5.3.2"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-07-29T07:16:43.237",
  "references": [
    {
      "url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/",
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated\nattacker to take over any account, including administrator accounts, by\nsupplying a valid user UUID without providing primary credentials via the 2FA\nvalidation endpoint."
    }
  ],
  "lastModified": "2026-07-30T16:54:05.457",
  "sourceIdentifier": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
}