CVE Watch31 jul 2026

CVE-2026-18206

A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs wh

CVSS

3.7

Bajo

EPSS

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KEV

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Exploit Today

0-100

Publicado: 31 jul 2026 · Última mod.: 31 jul 2026 · CWE-20

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain (like *.example.com) to restrict which hosts can register or update clients. Due to improper validation, the system accepts any hostname that ends with the specified domain suffix, even if it is not a legitimate subdomain. An attacker who can control the reverse DNS of their connection can bypass these host-based restrictions, potentially allowing unauthorized client modifications.

Referencias oficiales

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