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

CVE-2026-81912

Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-352 Falsificación de petición en sitios cruzados (Cross-Site Request Forgery)
Fecha de publicación:
11/09/2026
Última modificación:
24/09/2026

Descripción

*** Pendiente de traducción *** Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature. The dashboard/users/groups/bulkupdate/confirm() endpoint moved the selected group tree nodes without validating an action token, so a state-changing group move could be processed for an authenticated user who did not initiate it. Because relocating a group under a new parent causes that group's members to inherit the parent's permissions, a forged move can change effective authorization. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 5.7 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* 9.5.4 (excluyendo)