REDHAT-BUG-2482470: Medium severity Red Hat Keycloak vulnerability

Published May 28, 2026
·
Updated

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.

Affected Software

1 affected component
Red Hat Keycloak

Event History

May 28, 2026
Data Sourced
via Red Hat·04:19 AM
DescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2482470?

The severity of REDHAT-BUG-2482470 is medium, rated at 4.

2

How do I fix REDHAT-BUG-2482470?

To fix REDHAT-BUG-2482470, ensure you update to the latest version of Red Hat Keycloak that addresses this vulnerability.

3

What does REDHAT-BUG-2482470 affect?

REDHAT-BUG-2482470 affects the Keycloak identity and access management solution.

4

Can an attacker exploit REDHAT-BUG-2482470 if they do not have access to client credentials?

No, an attacker needs valid client credentials to exploit REDHAT-BUG-2482470.

5

What is the impact of REDHAT-BUG-2482470?

The impact of REDHAT-BUG-2482470 is that it allows attackers to bypass account lockout mechanisms during brute-force attack scenarios.

Contact

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