- Security patches fix CVE‑2026‑1609, CVE‑2026‑1529, CVE‑2026‑1486, and CVE‑2025‑14778 related to JWT authorization and UMA policy checks.
- Bug fixes include Node.js admin client token refresh, reduced startup memory usage, OOM‑kill prevention, Hibernate Validator default handling, and multiple cluster compatibility test and documentation issues.
- Minor enhancement upgrades the Minikube environment used in CI tests.
26.5.3
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...