RHSA-2026:50849: Important: Red Hat build of Keycloak 26.6.5 Images Security Update

Red Hat build of Keycloak is an integrated sign-on solution,available as a Red Hat JBoss Middleware for OpenShift containerizedimage. The Red Hat build of Keycloak for OpenShift image providesan authentication server that you can use to log in centrally, logout, and register. You can also manage user accounts for webapplications, mobile applications, and RESTful web services.Red Hat build of Keycloak Operator for OpenShift simplifiesdeployment and management of Keycloak 26.6.5 clusters.This erratum releases new images for Red Hat build of Keycloak26.6.5 for use within the OpenShift Container Platform cloudcomputing Platform-as-a-Service (PaaS) for on-premise or privatecloud deployments, aligning with the standalone product release.Security fixes: Authorization Bypass vulnerability in the admin-ui-ext bulk role-mapping-delete endpoints of Keycloak (CVE-2026-11986) Admin UI extension brute-force-user endpoint bypasses FGAPv2 user view restrictions (CVE-2026-14209) FGAP v2 client scope assignment bypass via ClientResource (CVE-2026-14614) FGAP v2 parent group children endpoint bypasses per-child view permission filter (CVE-2026-14615) DCR protocol mapper type-swap policy bypass allows privilege escalation (CVE-2026-15572) Authorization bypass via unnormalized URI matching in PathMatcher (CVE-2026-15573) LDAP entry-DN user search bypasses configured users DN boundary (CVE-2026-16071) Unbounded metric cardinality in user event metrics via request-controlled error text (CVE-2026-16100) Default DCR policy allows role forgery via User Property mappers (CVE-2026-16102) Quarkus REST - Unbounded multipart MIME part-header accumulation allows remote OOM denial of service (CVE-2026-16308) SAML IdP-initiated broker login bypasses link-only restriction (CVE-2026-16442) SAML broker metadata import disables response signature validation (CVE-2026-16443) Denial of Service via specially crafted gRPC requests (CVE-2026-40983) Denial of Service via specially crafted HTTP requests (CVE-2026-40984) Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512) Security bypass allows arbitrary code execution (CVE-2026-54513) HTTP Parameter Pollution in OIDC redirect URI allows response parameter duplication - #GHI-604 (CVE-2026-9689) Security policy bypass in JWE-encrypted request object processing (CVE-2026-9793) Brute-force protection bypass in CIBA flow (CVE-2026-9798)

— Red Hat