جزئیات آسیب‌پذیری

A flaw was found in Keycloak. A missing authorization check in the GroupResource.addChild() endpoint within the Admin REST API allows an authenticated user with limited administrative privileges to reparent any existing group. When Fine-Grained Admin Permissions v2 (FGAPv2) is enabled, an attacker with management rights over a single low-privilege group can reparent a highly privileged group (such as one possessing the realm-admin role) under their managed group. Because group permissions follow a hierarchical structure, this action unauthorizedly grants the attacker management and password-reset capabilities over the members of the targeted privileged group. An attacker can exploit this to reset an administrator's password, compromise the account, and achieve a full realm takeover, leading to a complete compromise of confidentiality, integrity, and availability.

• https://access.redhat.com/security/cve/CVE-2026-9099 vdb-entryx_refsource_REDHAT
• https://bugzilla.redhat.com/show_bug.cgi?id=2480182 issue-trackingx_refsource_REDHAT
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9099.json x_sadp-csaf-vex
• https://access.redhat.com/errata/RHSA-2026:30050 vendor-advisoryx_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2026:30084 vendor-advisoryx_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2026:30049 vendor-advisoryx_refsource_REDHAT
• https://access.redhat.com/errata/RHSA-2026:30083 vendor-advisoryx_refsource_REDHAT