CVE-2026-16103

Keycloak CVE-2026-16103 affects the keycloak-services component. It describes an incomplete fix for CVE-2026-9798: brute-force protection checks were added to the CIBA initiation path but omitted from the token redemption path. As a result, an attacker with valid client credentials can obtain acc...

EUVD-2026-45225

A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication CIBA initiation handler but were omitted from the token redemption handler. This...

CVE-2026-16103 Keycloak-services: keycloak-services: incomplete fix for ciba brute-force lockout bypass at token redemption

A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication CIBA initiation handler but were omitted from the token redemption handler. This...

CVE-2026-16103 Keycloak-services: keycloak-services: incomplete fix for ciba brute-force lockout bypass at token redemption

A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication CIBA initiation handler but were omitted from the token redemption handler. This...

CVE-2026-16103

A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication CIBA initiation handler but were omitted from the token redemption handler. This...

CVE-2026-16108 Keycloak-services: keycloak-services: realm default-group reads disclose hidden groups under fgap v2

A flaw was found in the default-groups REST endpoint and realm representation of Keycloak. This component is responsible for managing groups that are automatically assigned to new users within a realm. The issue allows a delegated administrator with realm-viewing permissions to see the names and...

CVE-2026-16093 Keycloak-services: keycloak-services: required signed-jwt assertion policy can be bypassed with unsigned assertion headers

Keycloak provides a mechanism called Client Policies to enforce security requirements on clients, such as requiring them to use signed JWTs for authentication. A flaw was discovered where this enforcement can be bypassed. An attacker with valid client credentials can provide a fake, unsigned...

CVE-2026-16089

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

CVE-2026-16089 Keycloak-services: keycloak-services: authorization codes can be retargeted to another client session

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

CVE-2026-16089

The CVE-2026-16089 entry describes a vulnerability in Red Hat Build of Keycloak’s keycloak-services, where OAuth 2.0 authorization codes are not properly bound to the client that requested them. If an attacker can intercept an authorization code, they can modify it to be redeemed by their own cli...

CVE-2026-16089 Keycloak-services: keycloak-services: authorization codes can be retargeted to another client session

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

CVE-2026-16089

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

EUVD-2026-45176

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

CVE-2026-16072

CVE-2026-16072 affects Keycloak’s organization management component. A delegated administrator with org-management permissions can create an invitation for a non-existent email address and then fetch the secret registration link via the API, enabling creation of new user accounts and their additi...

CVE-2026-15943 Keycloak-services: keycloak-services: oidc idp update reuses masked client secret after token url change

A flaw was found in the Keycloak keycloak-services component, which handles the management of identity providers. The issue occurs when a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value. Due to improper validation, Keycloak reuses the existing...

CVE-2026-15943

A vulnerability in Keycloak's keycloak-services component affects identity provider management. When a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value, the system performs improper validation and reuses the existing real secret even if fields ...

PT-2026-60799

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the keycloak-services component. The issue stems from an incomplete implementation of brute-force protection within the Client-Initiated Backchannel Authentication CIBA flow...

PT-2026-60800

Name of the Vulnerable Software and Affected Versions Red Hat Build of Keycloak affected versions not specified Description A flaw exists in the authentication configuration endpoint of the keycloak-services component, the core engine for Red Hat Build of Keycloak identity and access management...

PT-2026-60770

Name of the Vulnerable Software and Affected Versions Red Hat Build of Keycloak affected versions not specified Description A flaw in the keycloak-services component occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. This allows an...

CVE-2026-15945 Keycloak-services: keycloak-services: group hierarchy search discloses hidden parent groups under fgap v2

A flaw was found in the group search functionality of the Keycloak server's administrative API. When Fine-Grained Admin Permissions FGAP v2 is enabled, a delegated administrator can bypass access restrictions to view parent groups they are not authorized to see. By searching for a child group the...