CVE-2026-4427 | Red Hat Assisted Installer for OpenShift Container Platform 2 pgproto3 array index
A vulnerability was found in Red Hat Assisted Installer for OpenShift Container Platform 2, Multicluster Engine for Kubernetes, Multicluster Global Hub, Advanced Cluster Management for Kubernetes 2, Advanced Cluster Security 4, Enterprise Linux 10, Enterprise Linux 8, Enterprise Linux 9, OpenShift AI, OpenShift Cluster Manager CLI, OpenShift Container Platform 4, OpenShift on AWS, Quay 3 and Trusted Artifact Signer. It has been rated as problematic. Affected by this issue is some unknown functionality of the component pgproto3. This manipulation causes improper validation of array index.
This vulnerability is registered as CVE-2026-4427. Remote exploitation of the attack is possible. No exploit is available.