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CVE-2026-33714

Estado: AnalizadaAlta (7.1)—

Chamilo is an open-source learning management system (LMS). Version 2.0.0-RC.2 contains a SQL Injection vulnerability in the statistics AJAX endpoint, which is an incomplete fix for CVE-2026-30881. While CVE-2026-30881 was patched by applying Security::remove_XSS() to the date_start and date_end parameters in the get_user_registration_by_month action, the same parameters remain unsanitized in the users_active action within the same file (public/main/inc/ajax/statistics.ajax.php), where they are directly interpolated into a SQL query. An authenticated admin can exploit this to perform time-based blind SQL injection, enabling extraction of arbitrary data from the database. This issue has been fixed in version 2.0.0.

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.

SQL injection en endpoint AJAX de Chamilo 2.0.0-RC.2 accesible por administrador autenticado (PR:L) vía red. AV:N+PR:L→T1210. VI:H confirma impacto en integridad (T1565.001); extracción de datos (T1005) por inyección SQL time-based blind.

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

Vulnerability ScanningThreat Intelligence ProgramRestrict File and Directory PermissionsPrivileged Account ManagementRemote Data StorageNetwork Segmentation

Tecnologías afectadas (1)

Chamilo — Chamilo LMS

CWE

Referencias

JSON original (NVD)

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      "value": "Chamilo is an open-source learning management system (LMS). Version 2.0.0-RC.2 contains a SQL Injection vulnerability in the statistics AJAX endpoint, which is an incomplete fix for CVE-2026-30881. While CVE-2026-30881 was patched by applying Security::remove_XSS() to the date_start and date_end parameters in the get_user_registration_by_month action, the same parameters remain unsanitized in the users_active action within the same file (public/main/inc/ajax/statistics.ajax.php), where they are directly interpolated into a SQL query. An authenticated admin can exploit this to perform time-based blind SQL injection, enabling extraction of arbitrary data from the database. This issue has been fixed in version 2.0.0."
    },
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      "lang": "es",
      "value": "Chamilo es un sistema de gestión de aprendizaje (LMS) de código abierto. La versión 2.0.0-RC.2 contiene una vulnerabilidad de inyección SQL en el endpoint AJAX de estadísticas, que es una solución incompleta para CVE-2026-30881. Mientras que CVE-2026-30881 fue parcheado aplicando Security::remove_XSS() a los parámetros date_start y date_end en la acción get_user_registration_by_month, los mismos parámetros permanecen sin sanear en la acción users_active dentro del mismo archivo (public/main/inc/ajax/statistics.ajax.php), donde son directamente interpolados en una consulta SQL. Un administrador autenticado puede explotar esto para realizar una inyección SQL ciega basada en tiempo, permitiendo la extracción de datos arbitrarios de la base de datos. Este problema ha sido solucionado en la versión 2.0.0."
    }
  ],
  "lastModified": "2026-07-24T23:10:00.563",
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