# Keycloak 26.4.7 released

DevFeed: [Keycloak 26.4.7 released](<https://devfeed.tech/articles/keycloak-26-4-7-released-31740.md>)

Original publisher: [Read original article](<https://www.keycloak.org/2025/12/keycloak-2647-released>)

Author: Keycloak Team

Published: 2025-12-01T00:00:00Z

Content type: release

Language: en

Sources: [Keycloak Blog](<https://devfeed.tech/sources/keycloak-blog.md>)

Topics: [Keycloak](<https://devfeed.tech/topics/keycloak.md>), [Quarkus](<https://devfeed.tech/topics/quarkus.md>), [saml](<https://devfeed.tech/topics/saml.md>), [Authorization](<https://devfeed.tech/topics/authorization.md>)

Tags: [bugs](<https://devfeed.tech/tags/bugs.md>), [headers](<https://devfeed.tech/tags/headers.md>), [idm](<https://devfeed.tech/tags/idm.md>), [kerberos](<https://devfeed.tech/tags/kerberos.md>), [keycloak](<https://devfeed.tech/tags/keycloak.md>), [keycloak-release](<https://devfeed.tech/tags/keycloak-release.md>), [ldap](<https://devfeed.tech/tags/ldap.md>), [openid-connect](<https://devfeed.tech/tags/openid-connect.md>), [permissions](<https://devfeed.tech/tags/permissions.md>), [quarkus](<https://devfeed.tech/tags/quarkus.md>), [release](<https://devfeed.tech/tags/release.md>), [resolved](<https://devfeed.tech/tags/resolved.md>), [saml](<https://devfeed.tech/tags/saml.md>), [sso](<https://devfeed.tech/tags/sso.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

## AI overview

Keycloak 26.4.7 is released with documentation and Quarkus 3.27.1 upgrades, plus fixes for SAML initialization errors and persistent group permissions during concurrent membership changes.

## Source excerpt

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