CVE-2026-9705: Keycloak: keycloak: attacker can re-enable and take over disabled clients via registration access token

Published May 27, 2026
·
Updated

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.

Affected Software

3 affected components
Keycloak Keycloak
redhat Build Of Keycloak>=26.4<26.4.13
redhat Build Of Keycloak>=26.6<26.6.4

Event History

May 27, 2026
Data Sourced
via Red Hat·12:50 PM
DescriptionSeverityAffected Software
Jun 25, 2026
CVE Published
via MITRE·04:17 PM
Data Sourced
via MITRE·04:17 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:17 PM
DescriptionSeverityWeaknessAffected Software

Contact

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