Impact Score: 5/10
Keycloak 26.6.4 — 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 26.6.4. 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)
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<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>Security fixes</h3>
<ul>
<li><a href="https://github.com/keycloak/keycloak/issues/50344">#50344</a> CVE-2026-9099 Keycloak: group-admin escalation to realm-admin </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50345">#50345</a> CVE-2026-9083 Keycloak: keycloak: information disclosure through arbitrary filesystem path probing </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50347">#50347</a> CVE-2026-9086 Keycloak: keycloak: cross-site scripting (xss) via case-insensitive uri validation bypass </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50349">#50349</a> CVE-2026-9705 Keycloak: keycloak: attacker can re-enable and take over disabled clients via registration access token </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50350">#50350</a> CVE-2026-9795 Keycloak: keycloak: privilege escalation via improper scope mapping enforcement </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50351">#50351</a> CVE-2026-9799 Keycloak: keycloak: unauthorized access to resources via uma permission ticket bypass </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50352">#50352</a> CVE-2026-9800 Keycloak: keycloak policy enforcer: authorization bypass via incorrect uri comparison </li>
<li><a href="https://github.com/keycloak/keycloak/issues/50357">#50357</a> CVE-2026-11800 Keycloak: Authentication bypass via JWT algorithm confusion </li>
</ul>
<h3>Enhancements</h3>
<ul>
<li><a href="https://github.com/keycloak/keycloak/issues/50100">#50100</a> Upgrade to Quarkus 3.33.2.1 </li>
</ul>
<h3>Bugs</h3>
<ul>
<li><a href="https://github.com/keycloak/keycloak/issues/47999">#47999</a> [Keycloak JavaScript CI] - Build Keycloak <code>ci</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/49639">#49639</a> Keycloak Admin Client tests fails in CI <code>ci</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/49700">#49700</a> Incorrect migration guide reference <code>docs</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/49707">#49707</a> Cannot build project due to ISPN protoschema and 26.2 branch <code>infinispan</code></li>
<li><a href="https://github.com/keycloak/keycloak/issues/49733">#49733</a> keycloak-api-docs-dist is not deployable <code>dist/quarkus</code></li>
</ul>
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