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

CVE-2026-56843

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-522 Credenciales insuficientemente protegidas
Fecha de publicación:
08/07/2026
Última modificación:
08/07/2026

Descripción

*** Pendiente de traducción *** Incorrect authorization in the XML-RPC API of WebPros Plesk before 18.0.78.4 allows a low-privileged authenticated customer to look up domains they do not own, because ownership is enforced only for certain lookup filters and schema validation is bypassed for legacy protocol versions. This results in cross-tenant disclosure of other tenants' FTP credentials stored in cleartext, which can be leveraged to execute code as another tenant's system user.