Em resumo
- CVE-2026-9798 é uma vulnerabilidade MÉDIO (CVSS 4.3) que afeta org.keycloak:keycloak-services.
- Chance de exploração nos próximos 30 dias (EPSS): 0.38%, maior que 31.5% das vulnerabilidades.
- Ainda não há versão corrigida: acompanhe o aviso do fornecedor em Referências.
Description
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.
NVD description
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.
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