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CVE-2025-55208

Estado: AnalizadaCrítica (9)—

Chamilo is a learning management system. Versions prior to 1.11.34 have a Stored XSS through insecure file uploads in `Social Networks`. Through it, a low-privilege user can execute arbitrary code in the admin user inbox, allowing takeover of the admin account. Version 1.11.34 fixes the issue.

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).

🎯 Técnicas ATT&CK

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

XSS almacenado (CWE-79) mediante carga de archivos inseguros en Social Networks que ejecuta código en navegador del admin (UI:R confirma interacción). Permite takeover de cuenta administrativa.

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

Restrict Web-Based ContentDisable or Remove Feature or ProgramUser TrainingUser Account ManagementRestrict File and Directory PermissionsPrivileged Account Management

Tecnologías afectadas (1)

Chamilo — Chamilo LMS

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-55208",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-55208",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-06T10:43:21.004959Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "chamilo",
          "product": "chamilo-lms",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.11.34"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-05T21:16:13.447",
  "references": [
    {
      "url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Chamilo is a learning management system. Versions prior to 1.11.34 have a Stored XSS through insecure file uploads in `Social Networks`. Through it, a low-privilege user can execute arbitrary code in the admin user inbox, allowing takeover of the admin account. Version 1.11.34 fixes the issue."
    },
    {
      "lang": "es",
      "value": "Chamilo es un sistema de gestión del aprendizaje. Las versiones anteriores a la 1.11.34 tienen un XSS Almacenado a través de cargas de archivos inseguras en 'Redes Sociales'. A través de ello, un usuario con pocos privilegios puede ejecutar código arbitrario en la bandeja de entrada del usuario administrador, permitiendo la toma de control de la cuenta de administrador. La versión 1.11.34 corrige el problema."
    }
  ],
  "lastModified": "2026-06-17T09:41:27.553",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BF6714C4-3D58-43BF-A32C-6D436DB93E01",
              "versionEndExcluding": "1.11.34"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}