Описание
A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts.
Ссылки
- MitigationVendor Advisory
- Issue TrackingVendor Advisory
Уязвимые конфигурации
EPSS
4.3 Medium
CVSS3
Дефекты
Связанные уязвимости
A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts.
A flaw was found in Keycloak, an open-source identity and access manag ...
Keycloak has an Authentication Bypass by Primary Weakness
ALT-PU-2026-11043: package `keycloak` update to version 26.7.0-alt1
ALT-PU-2026-10844: package `keycloak` update to version 26.7.0-alt1
EPSS
4.3 Medium
CVSS3