| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| org.keycloak:keycloak-services | ≥ 26.5.0, ≤ 26.6.4≤ 26.4.7 |
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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