Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-56660

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-352 Falsificación de petición en sitios cruzados (Cross-Site Request Forgery)
Fecha de publicación:
01/10/2026
Última modificación:
01/10/2026

Descripción

*** Pendiente de traducción *** GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the update handler in UpdateCE.php downloads a ZIP archive and extracts its contents into the web root without validating file types or extraction paths. Because PHP files are written into a web-accessible directory, an attacker who can cause a malicious archive to be processed achieves remote code execution as the web-server user. Entry names are also used unsafely, allowing directory traversal (../) to write files outside the intended extraction directory. This issue has been patched in version 1.5.