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CVE-2026-28495

Estado: AnalizadaAlta (8.8)—

GetSimple CMS is a content management system. The massiveAdmin plugin (v6.0.3) bundled with GetSimpleCMS-CE v3.3.22 allows an authenticated administrator to overwrite the gsconfig.php configuration file with arbitrary PHP code via the gsconfig editor module. The form lacks CSRF protection, enabling a remote unauthenticated attacker to exploit this via Cross-Site Request Forgery against a logged-in admin, achieving Remote Code Execution (RCE) on the web server.

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.

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

User TrainingUser Account ManagementApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Getsimple-ce — Getsimple CMS

CWE

Referencias

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  "id": "CVE-2026-28495",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-28495",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-10T19:50:39.566454Z"
        }
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          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 2.8
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        "source": "nvd@nist.gov",
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  "published": "2026-03-10T20:16:37.663",
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      "tags": [
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        "Vendor Advisory"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
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    {
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      "value": "GetSimple CMS is a content management system. The massiveAdmin plugin (v6.0.3) bundled with GetSimpleCMS-CE v3.3.22 allows an authenticated administrator to overwrite the gsconfig.php configuration file with arbitrary PHP code via the gsconfig editor module. The form lacks CSRF protection, enabling a remote unauthenticated attacker to exploit this via Cross-Site Request Forgery against a logged-in admin, achieving Remote Code Execution (RCE) on the web server."
    },
    {
      "lang": "es",
      "value": "GetSimple CMS es un sistema de gestión de contenido. El plugin massiveAdmin (v6.0.3) incluido con GetSimpleCMS-CE v3.3.22 permite a un administrador autenticado sobrescribir el archivo de configuración gsconfig.php con código PHP arbitrario a través del módulo editor de gsconfig. El formulario carece de protección CSRF, lo que permite a un atacante remoto no autenticado explotar esto mediante falsificación de petición en sitios cruzados contra un administrador con sesión iniciada, logrando ejecución remota de código (RCE) en el servidor web."
    }
  ],
  "lastModified": "2026-06-17T10:28:44.700",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndIncluding": "3.3.22"
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