Threats Tagged 'cve-2026-37978'

CVE-2026-37978 is a medium severity vulnerability in Red Hat build of Keycloak 26.4 where a low-privilege administrator with the 'view-clients' role can exploit the 'evaluate-scopes' Admin API endpoint by supplying an arbitrary user ID. This flaw allows unauthorized disclosure of personally identifiable information (PII) across user roles within the realm. The vulnerability can be exploited remotely via network access to the Admin API. Red Hat has released security updates in version 26.4.12 addressing this and other vulnerabilities. Users are advised to apply the update after backing up their installations.

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 26.4.12 clusters. This erratum releases new images for Red Hat build of Keycloak 26.4.12 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: * Denial of Service via specially crafted SAML input (CVE-2026-7307) * Information Disclosure via evaluate-scopes Admin API (CVE-2026-37978) * Unauthorized account takeover via WebAuthn token replay (CVE-2026-37982) * Information disclosure via OIDC token introspection endpoint audience bypass (CVE-2026-37979) * Access token disclosure and implicit flow bypass via forged client data (CVE-2026-7571) * Session fixation in OIDC login flow that can lead to account takeover (CVE-2026-7507) * Open redirect when using wildcard valid redirect URIs in Keycloak (CVE-2026-7504) * Information disclosure via broken access control in user lookup endpoint (CVE-2026-37981) * Unauthorized resource access and data modification via Insecure Direct Object Reference (CVE-2026-4630)