CVE-2026-9705: Red Hat Build Of Keycloak

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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 products

• Red Hat Build Of Keycloak: from 26.4, before 26.4.13 (fixed in 26.4.13); from 26.6, before 26.6.4 (fixed in 26.6.4)

Published 2026-06-25. Last modified 2026-07-01.