CVE-2026-29063

Fixed in a distro release EPSS 1%CVSS 8.7

Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5.

Published 2026-03-06 · CVE record · OSV

Products: immutable-js, Red Hat Cluster Observability Operator 1.5.0, Red Hat Migration Toolkit for Virtualization 2.1, Red Hat Migration Toolkit for Virtualization 2.9, Red Hat multicluster engine for Kubernetes 2.1, Red Hat multicluster engine for Kubernetes 2.11, Red Hat multicluster engine for Kubernetes 2.6, Red Hat multicluster engine for Kubernetes 2.7, Red Hat multicluster engine for Kubernetes 2.8, Red Hat multicluster engine for Kubernetes 2.9, Red Hat Network Observability (NETOBSERV) 1.11.0, Red Hat Network Observability (NETOBSERV) 1.12.2, Red Hat Advanced Cluster Management for Kubernetes 2.14, Red Hat Advanced Cluster Management for Kubernetes 2.15, Red Hat Advanced Cluster Management for Kubernetes 2.16, Red Hat Advanced Cluster Security 4.8, Red Hat Advanced Cluster Security 4.9, Red Hat Advanced Cluster Security for Kubernetes 4.10, Red Hat Developer Hub 1.8, Red Hat Developer Hub 1.9, Red Hat Discovery 2, Red Hat Edge Manager 1.0, Red Hat Edge Manager 1.1, Red Hat Migration Toolkit 1.8, Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.3, Red Hat OpenShift Container Platform 4.12, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18, Red Hat OpenShift Container Platform 4.19, Red Hat OpenShift Container Platform 4.20, Red Hat OpenShift Container Platform 4.21, Red Hat Openshift Data Foundation 4.18, Red Hat Openshift Data Foundation 4.19, Red Hat Openshift Data Foundation 4.20, Red Hat OpenShift Pipelines 1.2, Red Hat OpenShift Service Mesh 2.6, Red Hat OpenShift Service Mesh 3.0, Red Hat OpenShift Service Mesh 3.1, Red Hat OpenShift Service Mesh 3.2, Red Hat OpenShift Service Mesh 3.3, Red Hat Quay 3.10, Red Hat Quay 3.12, Red Hat Quay 3.15, Red Hat Quay 3.16, Red Hat Quay 3.17, Red Hat Quay 3.9, Red Hat Satellite 6.18, Logging Subsystem for Red Hat OpenShift, Red Hat Node HealthCheck Operator, Red Hat OpenShift Lightspeed, Red Hat OpenShift Pipelines, Red Hat OpenShift Service Mesh 3, Red Hat 3scale API Management Platform 2, Red Hat Ansible Automation Platform 2, Red Hat build of Apicurio Registry 2, Red Hat Connectivity Link 1, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift AI (RHOAI), Red Hat OpenShift Container Platform 4, Red Hat OpenShift GitOps, Red Hat OpenShift Virtualization 4, Red Hat Satellite 6, Red Hat Self-service automation portal 2

Fixed upstream

Distro releases