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

CVE-2026-15572

Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
05/08/2026
Última modificación:
10/08/2026

Descripción

*** Pendiente de traducción *** A flaw was found in Keycloak's Dynamic Client Registration (DCR) security policy management. The "Allowed Protocol Mapper Types" policy, which restricts which types of data mappers a client can use, fails to re-validate the mapper type during a client update if the mapper's configuration remains unchanged. An attacker with client registration privileges can exploit this by first registering an allowed mapper type with a malicious configuration and then swapping it for a restricted, high-privilege mapper type (such as one that hardcodes administrative roles). This allows the attacker to gain full administrative access to the Keycloak realm.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* 26.4 (incluyendo) 26.4.14 (excluyendo)
cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* 26.6 (incluyendo) 26.6.5 (excluyendo)