A denial of service vulnerability was found in Keycloak that could allow an administrative user with the right to change realm settings to disrupt the service. This action is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that has already been terminated, leading to the failure of said request.
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat build of Keycloak 26.0 | RedHat | rhbk/keycloak-operator-bundle:26.0.8-1 | * |
| Red Hat build of Keycloak 26.0 | RedHat | rhbk/keycloak-rhel9:26.0-7 | * |
| Red Hat build of Keycloak 26.0 | RedHat | rhbk/keycloak-rhel9-operator:26.0-8 | * |
| RHBK 26.0.8 | RedHat | org.keycloak/keycloak-quarkus-server | * |