CVE-2026-63234

Estado: AplazadaCrítica (9.9)—

A SQL injection and unsafe deserialisation vulnerability in Koollab LMS allowed an authenticated attacker to inject through the manual mark assessment endpoint, control data passed to unserialize(), write a webshell to a publicly accessible location, and execute arbitrary code on the server.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Puntuación base: 9.9

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.53%
Percentil entre todas las CVEs puntuadas: 43
Fecha de la puntuación: 5/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement90 %
Impacto principalT1059 Command and Scripting Interpreterexecution90 %
Impacto secundarioT1005 Data from Local Systemcollection80 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact85 %

Acceso autenticado a servicio remoto (PR:L, AV:N). SQL injection + deserialización insegura permiten ejecución de código arbitrario y escritura de webshell en ubicación pública del servidor.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account Management Disable or Remove Feature or Program Vulnerability Scanning Threat Intelligence Program Restrict Web-Based Content Restrict File and Directory Permissions

Tecnologías afectadas (1)

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

Koollab — LMS^AI

CWE

CWE-89

Referencias

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/

JSON original (NVD)

Mostrar

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  "id": "CVE-2026-63234",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63234",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-29T15:13:23.128913Z"
        }
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    "cvssMetricV31": [
      {
        "type": "Secondary",
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 3.1
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  "affected": [
    {
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
      "affectedData": [
        {
          "vendor": "Three Learning",
          "product": "Koollab LMS",
          "versions": [
            {
              "status": "affected",
              "version": "5.3.2"
            }
          ],
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  ],
  "published": "2026-07-29T07:16:42.817",
  "references": [
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      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
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  "vulnStatus": "Deferred",
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      "value": "A SQL injection and unsafe deserialisation\nvulnerability in Koollab LMS allowed an authenticated attacker to inject through the manual mark\nassessment endpoint, control data passed to unserialize(), write a webshell to\na publicly accessible location, and execute arbitrary code on the server."
    }
  ],
  "lastModified": "2026-07-30T16:54:05.457",
  "sourceIdentifier": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
}