Threats Tagged 'cve-2025-10939'

Red Hat build of Keycloak is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Hat build of Keycloak for OpenShift image provides an authentication server that you can use to log in centrally, log out, and register. You can also manage user accounts for web applications, mobile applications, and RESTful web services. Red Hat build of Keycloak Operator for OpenShift simplifies deployment and management of Keycloak 26.4.4 clusters. This erratum releases new images for Red Hat build of Keycloak 26.4.4 for use within the OpenShift Container Platform cloud computing Platform-as-a-Service (PaaS) for on-premise or private cloud deployments, aligning with the standalone product release. Security fixes: * Unable to restrict access to the admin console (CVE-2025-10939) * Debug default bind address (CVE-2025-11538) * User can refresh offline session even after client's offline_access scope was removed (CVE-2025-12110) * WebAuthn Attestation Statement Verification Bypass (CVE-2025-12150) * Offline Session takeover due to reused Authentication Session ID (CVE-2025-12390)

Red Hat build of Keycloak 26.4.4 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes: * Unable to restrict access to the admin console (CVE-2025-10939) * Debug default bind address (CVE-2025-11538) * User can refresh offline session even after client's offline_access scope was removed (CVE-2025-12110) * WebAuthn Attestation Statement Verification Bypass (CVE-2025-12150) * Offline Session takeover due to reused Authentication Session ID (CVE-2025-12390)

CVE-2025-10939 is a low-severity vulnerability in the Red Hat build of Keycloak 26.4 involving an uncontrolled search path element. The issue arises when a proxy, such as HAProxy, is used and relative or non-normalized paths can be exploited to access the /admin path, which is recommended to be blocked from external exposure. This flaw could allow unauthorized users to reach administrative interfaces indirectly via the /realms path, potentially bypassing intended access restrictions. The vulnerability does not require authentication or user interaction but has a low impact limited to confidentiality with no integrity or availability effects. No known exploits are currently reported in the wild. European organizations using Keycloak behind proxies should review their proxy configurations to ensure strict path normalization and access controls. Countries with significant Red Hat and Keycloak adoption, especially those with critical identity management infrastructures, are more likely to be affected. Given the low CVSS score (3.7) and the nature of the flaw, the overall risk is low but warrants attention to prevent potential reconnaissance or limited information disclosure.

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