CVE-2026-10090 Multicluster-operators-subscription: multicluster-operators-subscription: namespace edit user can deploy cluster-scoped clusterrolebinding and become cluster-admin via application subscription

A flaw was found in the Application Subscription controller multicluster-operators-subscription of Red Hat Advanced Cluster Management for Kubernetes ACM. A user with namespace-scoped "edit" privileges in an ACM hub namespace can create a Channel resource pointing to a Helm repository they contro...

CVE-2026-17107

A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes RHACM and multicluster-engine MCE. The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke...

CVE-2026-17107 Cluster-proxy: cluster-proxy: impersonation header injection in service-proxy grants cluster-admin on every managed cluster

A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes RHACM and multicluster-engine MCE. The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke...

UBUNTU-CVE-2026-11774

An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server 389-ds-base. In sasliostartpacket, adding sizeofuint32t to a crafted SASL packet length prefix of 0xFFFFFFFC causes unsigned wraparound to zero, bypassing the nsslapd-maxsasliosize limit and leading to a heap buffer...

Arbitrary Code Execution

redhat-idm-console is vulnerable to arbitrary code execution. When running on Red Hat Enterprise Linux, Red Hat Directory Server 8.0 used insecure permissions on the redhat-idm-console startup script. Local users could modify this script and run arbitrary code with the privileges of the user...