Red Hat Product Errata RHSA-2026:19597 - Security Advisory Issued: 2026-05-20 Updated: 2026-05-20 RHSA-2026:19597 - Security Advisory Overview Updated Images Synopsis Important: Red Hat build of Keycloak 26.4.12 Images Security Update Type/Severity Security Advisory: Important Topic New images are available for Red Hat build of Keycloak 26.4.12 and Red Hat build of Keycloak 26.4.12 Operator, running on OpenShift Container Platform Description 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) Solution Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. Affected Products Red Hat build of Keycloak Text-only Advisories x86_64 Fixes (none) CVEs CVE-2026-4630 CVE-2026-4878 CVE-2026-7307 CVE-2026-7504 CVE-2026-7507 CVE-2026-7571 CVE-2026-37978 CVE-2026-37979 CVE-2026-37981 CVE-2026-37982 References https://access.redhat.com/security/updates/classification/#important aarch64 rhbk/keycloak-rhel9@sha256:554cd90241225b6d64d0e7ada9a8ab50ae2054efdb2f5b2cbdb721475ea296df rhbk/keycloak-rhel9-operator@sha256:f80c9568ff4b3cc086b7107c8e68db5f548c2b51a01dd8c79d0c9705574a180c ppc64le rhbk/keycloak-rhel9@sha256:fa7342d82f080bfe8ffaaf5ba204b98dc435897a388b1501d23a1541fe7f1272 rhbk/keycloak-rhel9-operator@sha256:d8185614aa82117680351c710a5d7b80703a9d450dd02a7becfd1405cbc5ecd5 s390x rhbk/keycloak-rhel9@sha256:68b61a98fcdfd46a166cabe097d609d65fd51181860f9ec7f691bbe5d2a986db rhbk/keycloak-rhel9-operator@sha256:d915c75947df63aed99031401dbf570181dba3c5a484eb88438a27892eb7aa72 x86_64 rhbk/keycloak-operator-bundle@sha256:15286c44c4003e787b0bdf9a0bbc5083a2f2312eaf29ccd0c6943232ff52d729 rhbk/keycloak-rhel9@sha256:81773a34d38a8df4b07344fe4ba5670d18684b3579c9d2cf8d0690bf5ec5ab40 rhbk/keycloak-rhel9-operator@sha256:2a81955051fb0975bfcb77d25ed64c84038d3c7293f910aeb88f9241be531f9d The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .