[ CVE-2026-9705 · Published 25 Jun 2026 ]
Keycloak: Attacker can re-enable and take over disabled clients via registration access token
CVSS 6.5
EPSS <1%Fix available
[ Description ]Official description
A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker to reset the client's secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.
[ Fixes ]Fixes and patches
- org.keycloak:keycloak-services 26.6.4Fixed version · GitHub Advisories · maven package org.keycloak:keycloak-services: upgrade to 26.6.4 or later (affected < 26.6.4)
[ Packages ]Affected open-source packages
- org.keycloak:keycloak-services mavenAffected < 26.6.4 · fixed in 26.6.4 · GHSA-r7rc-c989-86g6
[ References ]References
- access.redhat.com/errata/RHSA-2026:30049vendor-advisoryx_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:30050vendor-advisoryx_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:30083vendor-advisoryx_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:30084vendor-advisoryx_refsource_REDHAT
- access.redhat.com/security/cve/CVE-2026-9705vdb-entryx_refsource_REDHAT
- bugzilla.redhat.com/show_bug.cgiissue-trackingx_refsource_REDHAT