Threats Tagged 'cve-2026-2575'

Red Hat build of Keycloak 26.4.10 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: * Keycloak SAML broker: Authentication bypass due to disabled SAML client completing IdP-initiated login (CVE-2026-3047) * Improper Enforcement of Disabled Identity Provider in IdentityBrokerService (Authentication Bypass) (CVE-2026-3009) * Unauthorized authentication via disabled SAML Identity Provider (CVE-2026-2603) * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092) * Missing Check on Disabled Client for Docker Registry Protocol (CVE-2026-2733) * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575) * Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData (CVE-2026-1190) * Keycloak Authorization Header Parsing Leading to Potential Security Control Bypass (CVE-2026-0707)

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 26.4.10 clusters. This erratum releases new images for Red Hat build of Keycloak 26.4.10 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: * Keycloak SAML broker: Authentication bypass due to disabled SAML client completing IdP-initiated login (CVE-2026-3047) * Improper Enforcement of Disabled Identity Provider in IdentityBrokerService (Authentication Bypass) (CVE-2026-3009) * Unauthorized authentication via disabled SAML Identity Provider (CVE-2026-2603) * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092) * Missing Check on Disabled Client for Docker Registry Protocol (CVE-2026-2733) * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575) * Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData (CVE-2026-1190) * Keycloak Authorization Header Parsing Leading to Potential Security Control Bypass (CVE-2026-0707)

A flaw was found in Keycloak. An unauthenticated remote attacker can trigger an application level Denial of Service (DoS) by sending a highly compressed SAMLRequest through the SAML Redirect Binding. The server fails to enforce size limits during DEFLATE decompression, leading to an OutOfMemoryError (OOM) and subsequent process termination. This vulnerability allows an attacker to disrupt the availability of the service.

MediumVulnerabilityUnited StatesGermanyUnited Kingdom+9#cve#cve-2026-2575