org.keycloak/keycloak-services: Keycloak: Unauthorized modification of unmanaged user attributes by administrators

A flaw was found in Keycloak. An administrator with manage-users permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the syste...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.9 Security Update

New Red Hat build of Keycloak 26.4.9 packages are available from the Customer Portal Red Hat build of Keycloak 26.4.9 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes...

keycloak: Incorrect ownership checks in /uma-policy/

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService UMA Protection API. When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first...

org.keycloak.services.resources.organizations: Keycloak: Unauthorized organization registration via improper invitation token validation

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token JWT payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.2.13 Security Update

New Red Hat build of Keycloak 26.2.13 packages are available from the Customer Portal Red Hat build of Keycloak 26.2.13 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security...

CVE-2026-1486

A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider IdP is enabled before issuing tokens. The issuer lookup mechanism lookupIdentityProviderFromIssuer retrieves the IdP configuration but does not filter...

CVE-2026-1529

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token JWT payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an...

CVE-2025-14778

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService UMA Protection API. When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first...

CVE-2026-1609

A flaw was found in Keycloak. When the JSON Web Token JWT authorization grant preview feature is enabled and a user account is disabled, Keycloak fails to validate the user’s disabled status during JWT authorization grant processing. A remote attacker with low privileges can exploit this improper...

Improper Restriction of Security Token Assignment

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Improper Restriction of Security Token Assignment due to improper enforcement of user disabled-state checks i...

CVE-2025-14778 Keycloak: incorrect ownership checks in /uma-policy/

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService UMA Protection API. When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first...

CVE-2025-14778

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService UMA Protection API. When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first...

CVE-2025-14778 Keycloak: incorrect ownership checks in /uma-policy/

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService UMA Protection API. When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first...

CVE-2025-14778

A vulnerability in Keycloak’s UMA Protection API (UserManagedPermissionService) allows horizontal privilege escalation when updating or deleting a UMA policy tied to multiple resources. The authorization check currently validates ownership only against the first resource in the policy’s list, ena...

CVE-2025-14778

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService UMA Protection API. When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first...

CVE-2026-1529 Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registration via improper invitation token validation

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token JWT payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an...

CVE-2026-1529

CVE-2026-1529 affects Keycloak. An attacker can craft/modify a legitimate invitation token’s JWT payload to change the organization ID and target email, exploiting a lack of cryptographic signature verification to self-register into an unauthorized organization and gain access. The vulnerability ...

CVE-2026-1529 Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registration via improper invitation token validation

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token JWT payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an...

CVE-2026-1529

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token JWT payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an...

CVE-2026-1486

A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider IdP is enabled before issuing tokens. The issuer lookup mechanism lookupIdentityProviderFromIssuer retrieves the IdP configuration but does not filter...