Impact Score: 5/10
Keycloak 26.3.5 — Release Notes & Engineering Impact
Source available — automated, not human-reviewed
Component: keycloak · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
Keycloak 26.3.5. Source highlight: Before upgrading refer to
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
📄 View Raw Release Notes (Original Developer Log)
<div>
<h2>Upgrading</h2>
<p>Before upgrading refer to <a href="https://www.keycloak.org/docs/latest/upgrading/#migration-changes">the migration guide</a> for a complete list of changes.</p>
<h2>All resolved issues</h2>
<h3>Enhancements</h3>
<ul>
<li><a href="https://github.com/keycloak/keycloak/issues/41371">#41371</a> Upgrade to Quarkus 3.20.3 LTS <code>dist/quarkus</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/41373">#41373</a> Remove explicit MariaDB connector dependency <code>dist/quarkus</code></li>
</ul>
<h3>Bugs</h3>
<ul>
<li><a href="https://github.com/keycloak/keycloak/issues/41418">#41418</a> Access to user details for restricted admin fails after enabling organizationin realm <code>organizations</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/42405">#42405</a> Old hmac-generated (32bit) is recreated when order is changed in realm keys ui <code>core</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/42491">#42491</a> CVE-2025-58057 - Netty BrotliDecoder / Data Amplification vulnerability <code>dist/quarkus</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/42492">#42492</a> CVE-2025-58056 - Netty HTTP Request Smuggling vulnerability <code>dist/quarkus</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/42736">#42736</a> Reset password in admin UI with 'not recently used' password policy leads to error 'Device already exists with the same name' <code>core</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/42769">#42769</a> Missing switch "ID Token as detached signature" in the admin console client settings <code>oidc</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/42922">#42922</a> Dynamic Client Registration invalidates the realm cache <code>core</code></li>
</ul>
</div>