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CVE-2026-18207

Опубликовано: 28 июл. 2026
Источник: redhat
CVSS3: 6.5
EPSS Низкий

Описание

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a different part of the group hierarchy, potentially allowing them to register or update clients without following required security hardening profiles.

Отчет

The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires the attacker to have existing client registration or update privileges and a specific group hierarchy configuration. Successful exploitation allows an attacker to bypass client policy enforcement and register or update clients without required security hardening. The vulnerability's root cause is the use of non-unique group names for membership validation in client policy conditions.

Меры по смягчению последствий

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Build of Keycloakkeycloak-servicesAffected
Red Hat Build of Keycloakrhbk-keycloak-rhel9/rhbk-keycloak-rhel9Affected
Red Hat Build of Keycloakrhbk-openshift-rhel9/rhbk-openshift-rhel9Affected
Red Hat Data Grid 8keycloak-servicesNot affected
Red Hat JBoss Enterprise Application Platform Expansion Packkeycloak-servicesNot affected
Red Hat Single Sign-On 7keycloak-servicesNot affected

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-285

EPSS

Процентиль: 22%
0.00292
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
nvd
19 дней назад

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a different part of the group hierarchy, potentially allowing them to register or update clients without following required security hardening profiles.

CVSS3: 6.5
debian
19 дней назад

A flaw was found in the client policy enforcement mechanism of Keycloa ...

CVSS3: 6.5
github
19 дней назад

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a different part of the group hierarchy, potentially allowing them to register or update clients without following required security hardening profiles.

EPSS

Процентиль: 22%
0.00292
Низкий

6.5 Medium

CVSS3