CVE-2026-33715

{
  "id": "CVE-2026-33715",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33715",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-15T13:36:55.706592Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "chamilo",
          "product": "chamilo-lms",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2.0-RC.2, < 2.0-RC.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-04-14T21:16:26.060",
  "references": [
    {
      "url": "https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-mxc9-9335-45mc",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Chamilo LMS is an open-source learning management system. In version 2.0-RC.2, the file public/main/inc/ajax/install.ajax.php is accessible without authentication on fully installed instances because, unlike other AJAX endpoints, it does not include the global.inc.php file that performs authentication and installation-completed checks. Its test_mailer action accepts an arbitrary Symfony Mailer DSN string from POST data and uses it to connect to an attacker-specified SMTP server, enabling Server-Side Request Forgery (SSRF) into internal networks via the SMTP protocol. An unauthenticated attacker can also abuse this to weaponize the Chamilo server as an open email relay for phishing and spam campaigns, with emails appearing to originate from the server's IP address. Additionally, error responses from failed SMTP connections may disclose information about internal network topology and running services. This issue has been fixed in version 2.0.0-RC.3."
    },
    {
      "lang": "es",
      "value": "Chamilo LMS es un sistema de gestión de aprendizaje de código abierto. En la versión 2.0-RC.2, el archivo public/main/inc/ajax/install.ajax.php es accesible sin autenticación en instancias completamente instaladas porque, a diferencia de otros puntos finales AJAX, no incluye el archivo global.inc.php que realiza comprobaciones de autenticación y de instalación completada. Su acción test_mailer acepta una cadena DSN arbitraria de Symfony Mailer de los datos POST y la utiliza para conectarse a un servidor SMTP especificado por el atacante, lo que permite la falsificación de petición del lado del servidor (SSRF) en redes internas a través del protocolo SMTP. Un atacante no autenticado también puede abusar de esto para convertir el servidor Chamilo en un relé de correo electrónico abierto para campañas de phishing y correo no deseado, con correos electrónicos que parecen originarse de la dirección IP del servidor. Además, las respuestas de error de las conexiones SMTP fallidas pueden revelar información sobre la topología de la red interna y los servicios en ejecución. Este problema ha sido solucionado en la versión 2.0.0-RC.3."
    }
  ],
  "lastModified": "2026-07-24T23:10:00.563",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DAF96697-6B6D-459D-9510-E5CEEDC2859B"
            }
          ],
          "operator": "OR"
        }
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  "sourceIdentifier": "security-advisories@github.com"
}