Описание
Keycloak: UMA Policy Resource Injection Allows Unauthorized Cross-User Permission Grants
A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2026-4636
- https://github.com/keycloak/keycloak/issues/47717
- https://github.com/keycloak/keycloak/commit/995832f8b74b02833d106c8788bb7a78634aa725
- https://access.redhat.com/errata/RHSA-2026:6475
- https://access.redhat.com/errata/RHSA-2026:6476
- https://access.redhat.com/errata/RHSA-2026:6477
- https://access.redhat.com/errata/RHSA-2026:6478
- https://access.redhat.com/security/cve/CVE-2026-4636
- https://bugzilla.redhat.com/show_bug.cgi?id=2450251
Пакеты
org.keycloak:keycloak-services
< 26.5.7
26.5.7
Связанные уязвимости
A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.
A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.
A flaw was found in Keycloak. An authenticated user with the uma_prote ...
Уязвимость программного средства для управления идентификацией и доступом Keycloak, связанная с некорректным порядком поведения, позволяющая нарушителю получить несанкционированный доступ к конфиденциальной информации
ALT-PU-2026-6040: package `keycloak` update to version 26.5.7-alt1