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.
Problem types
Insufficient Session Expiration
Product status
26.4.13-1 (rpm) before *
26.4-19 (rpm) before *
26.4-19 (rpm) before *
26.6.4-2 (rpm) before *
26.6-8 (rpm) before *
26.6-8 (rpm) before *
Timeline
| 2026-05-27: | Reported to Red Hat. |
| 2026-06-25: | Made public. |
Credits
Red Hat would like to thank Qiulin Deng for reporting this issue.
References
access.redhat.com/errata/RHSA-2026:30049 (RHSA-2026:30049)
access.redhat.com/errata/RHSA-2026:30050 (RHSA-2026:30050)
access.redhat.com/errata/RHSA-2026:30083 (RHSA-2026:30083)
access.redhat.com/errata/RHSA-2026:30084 (RHSA-2026:30084)
access.redhat.com/security/cve/CVE-2026-9705
bugzilla.redhat.com/show_bug.cgi?id=2481878 (RHBZ#2481878)