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CVE-2026-22241

Estado: ModificadaAlta (7.3)—

The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an arbitrary file upload vulnerability in the theme import functionality enables an attacker with administrative privileges to upload arbitrary files on the server's file system. The main cause of the issue is that no validation or sanitization of the file's present inside the zip archive. This leads to remote code execution on the web server. Version 4.2 patches 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.

Acceso de red con privilegios elevados (PR:H) a funcionalidad de importación sin validación de archivos ZIP; impacta en web shell y ejecución de código en el servidor web.

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

Disable or Remove Feature or ProgramPrivileged Account ManagementVulnerability ScanningUser Account ManagementThreat Intelligence ProgramRestrict Web-Based Content

Tecnologías afectadas (1)

Openeclass — Openeclass

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-22241",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
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          "version": "2.0.3",
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          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "references": [
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  "vulnStatus": "Modified",
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      "source": "security-advisories@github.com",
      "description": [
        {
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          "value": "CWE-434"
        }
      ]
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  ],
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    {
      "lang": "en",
      "value": "The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an arbitrary file upload vulnerability in the theme import functionality enables an attacker with administrative privileges to upload arbitrary files on the server's file system. The main cause of the issue is that no validation or sanitization of the file's present inside the zip archive. This leads to remote code execution on the web server. Version 4.2 patches the issue."
    },
    {
      "lang": "es",
      "value": "La plataforma Open eClass (anteriormente conocida como GUnet eClass) es un sistema completo de gestión de cursos. Antes de la versión 4.2, una vulnerabilidad de carga de archivos arbitrarios en la funcionalidad de importación de temas permite a un atacante con privilegios administrativos cargar archivos arbitrarios en el sistema de archivos del servidor. La causa principal del problema es que no hay validación ni saneamiento de los archivos presentes dentro del archivo zip. Esto lleva a la ejecución remota de código en el servidor web. La versión 4.2 corrige el problema."
    }
  ],
  "lastModified": "2026-06-17T10:19:37.103",
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