- Preview features added: JWT Authorization Grant, Workflows for realm automation, federated client authentication using Kubernetes service‑account tokens, and a new USER SESSION DELETED event.
- Admin improvements: organization invitation management via console and REST API, CORS enhancements, OpenTelemetry support, and performance gains with local session handling and batch session deletions.
- Documentation and config updates: new guides for Model Context Protocol and JWT grant, HTTP performance optimizer (http‑optimized‑serializers) preview, and note that containers are not available for ppc64le architecture.
26.5.0
Official Keycloak changelog summary with source attribution, release tags, and community reactions.
Track this Keycloak release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.
Verify the original release note
Every summary should remain traceable to the original changelog or release source.
Follow this in context
Turn this Keycloak release note into a weekly digest for the tools you actually use.
Create digestMore Keycloak changelog updates
Patched multiple critical CVEs (OpenTelemetry memory allocation, admin permission bypass, Jackson upgrade, group hierarchy disclosure, vault secret leak, account linking hash, reset credentials bypass) and fixed a config leak of the vaul...
Security patches address CVE‑2026‑9793 (JWE request object enforcement), CVE‑2026‑4629 (hard‑coded role mapper injection), CVE‑2026‑14209 (admin UI brute‑force), and two fine‑grained admin permission bypasses (client scope and group chil...