Keycloak 26.5.3 released

To download the release go to Keycloak downloads . Upgrading Before upgrading refer to the migration guide for a complete list of changes. All resolved issues Security fixes #46144 CVE-2026-1609 Disabled users can still obtain tokens via JWT Authorization Grant #46145 CVE-2026-1529 Forged invitation JWT enables cross-organization self-registration #46146 CVE-2026-1486 Logic Bypass in JWT Authorization Grant Allows Authentication via Disabled Identity Providers #46147 CVE-2025-14778 Incorrect ownership checks in /uma-policy/ Enhancements #45892 Upgrade minikube for CI tests operator Bugs…