keycloak-services: keycloak-services: SAML broker metadata import disables response signature validation

A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables...

CVE-2026-16100

CVE-2026-16100 describes a flaw in Keycloak where, when metrics are enabled, raw error messages from failed account operations are recorded as Prometheus metric labels. Because these messages may include user-supplied input (e.g., nonexistent client IDs), an authenticated user can generate an eno...

CVE-2026-16100 Keycloak-services: keycloak-services: unbounded metric cardinality in user event metrics via request-controlled error text

A flaw was found in the user-event metrics recording of Keycloak. When metrics are enabled, the system records raw error messages from failed account operations as Prometheus metric labels. Because these error messages can include user-supplied input like nonexistent client IDs, an authenticated...

CVE-2026-15573 Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher

A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies PathMatcher does not properly normalize URIs before comparison. By adding extra characters like a trailing slash or matrix parameters to a URL, an attacker can trick th...

CVE-2026-16443

A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables...

CVE-2026-16443 Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation

A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables...

CVE-2026-16443

CVE-2026-16443 affects Red Hat build of Keycloak: the keycloak-services SAML broker metadata import feature incorrectly disables signature validation for SAML responses when provider metadata lacks certain key usage attributes, even if a signing certificate is supplied. This enables an unauthenti...

CVE-2026-18569

The vulnerability CVE-2026-18569 affects the Red Hat Build of Keycloak, specifically the keycloak-services component’s backchannel logout endpoint. The root cause is when an OIDC identity provider is configured to skip signature validation, causing the system to accept logout requests with no cry...

CVE-2026-18569 Keycloak-services: keycloak-services: oidc backchannel logout accepts unsigned forged logout tokens

A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the Red Hat Build of Keycloak. This component handles authentication and session management for applications. The issue occurs when an OIDC identity provider is configured to skip signature...

CVE-2026-18570

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates...

CVE-2026-18573

Summary: The CVE-2026-18573 affects the keycloak-services component of Keycloak. The root cause is improper evaluation of client state during a realm update, allowing a user with client management permissions to bypass client policies by first creating a public client and then upgrading it to a c...

CVE-2026-18572

Keycloak is affected by a vulnerability in its time-based access control. A flaw allows a user to include a fake time value in an authorization request, which overrides the actual server time and bypasses time-based restrictions, potentially granting access to protected resources outside allowed ...

CVE-2026-18572 Keycloak-services: keycloak-services: uma claim token can override authorization time-policy evaluation attributes

Keycloak provides authorization services that allow administrators to restrict access to resources based on time policies for example, only allowing access during business hours. A flaw was discovered where a user can include a fake time value in their authorization request that overrides the...

CVE-2026-18570

CVE-2026-18570 affects the Red Hat Build of Keycloak (keycloak-services) where the full-scope-disabled client-policy executor only validates the fullScopeAllowed field if present. Omission of this field allows a delegated user to bypass policy, creating a client with full scope access and enablin...

EUVD-2026-51924

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates...

CVE-2026-18570

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates...

CVE-2026-18570 Keycloak-services: keycloak-services: full-scope-disabled client policy validation bypass via omitted fullscopeallowed

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates...

CVE-2026-18209

CVE-2026-18209 impacts the Keycloak service, specifically the component handling OpenID Connect (OIDC) flows. The flaw: the security check to prevent HTTP parameter pollution only examines the query string of a redirect URL, ignoring the fragment. With a wildcard redirect URI, an attacker can in...

CVE-2026-18206 Keycloak-services: keycloak-services: client policy source-host wildcard domain matching bypass

A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain like .example.com to restrict which hosts can register or update clients. Due to improper validation, the...

CVE-2026-18211 Keycloak-services: keycloak-services: secure-client-uris policy bypass via localhost-prefixed domains

A flaw was found in the secure-client-uris client policy executor within Keycloak core services. This component is responsible for enforcing security requirements on client configurations, such as requiring encrypted connections for redirect URIs. Due to an improper check that only looks at the...