Keycloak 26.4.7 released

December 01 2025

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

Enhancements

• #43156 [Docs] Warn users about printing headers in HTTP access logs docs
• #43643 Upgrade to Quarkus 3.27.1 dist/quarkus

Bugs

• #44438 Intermittent ConcurrentModificationException during SAML initialization causing status code 400 for clients saml
• #44480 Wrong persistent group permissions when multiple group membership changes happen in the same request core