AIKIDO-2026-201368
keycloak-services is vulnerable to Improper Access Control
81
High Risk
This Affects:
keycloak-servicesTL;DR
When the JWT authorization grant preview feature is enabled, keycloak-services issues tokens through the grant without checking whether the resolved user account is enabled. A user whose account has been disabled continues to obtain access and refresh tokens through the JWT authorization grant. The grant processing associates the resolved user with the token-issuing event and proceeds straight to issuance with no enabled-status or required-actions gate. The fix rejects disabled users and accounts with pending required actions before any token is issued.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you have enabled the JWT authorization grant preview feature.
Background info
keycloak-services is vulnerable to Improper Access Control in versions 26.5.0 - 26.5.2.
How to fix this
Upgrade the org.keycloak:keycloak-services library to the patch version.
Links
GitHub Release
Related Issue
Other
access.redhat.com/security/cve/CVE-2026-1609bugzilla.redhat.com/show_bug.cgi?id=2435257security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1609.json
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