CVE-2026-10101: Red Hat Multicluster Engine For Kubernetes

Medium severity, CVSS 6.3. EPSS: 0.2% chance of exploitation in the next 30 days.

ACM/MCE assisted-service writes raw referenced pull-secret contents into `InfraEnv.status.conditions[].message` when pull-secret validation fails. A namespace principal with the stock `view` ClusterRole cannot directly read Secrets, but can read `InfraEnv` objects and recover the referenced Secret's `.dockerconfigjson` data from status. This bypasses the Kubernetes/OpenShift RBAC separation between read-only namespace viewers and Secret readers. In the reproduced proof, the same ServiceAccount was denied `get` and `list` on Secrets, but recovered synthetic pull-secret `username`, `password`, `email`, and base64 `auth` fields through `InfraEnv.status`.

Affected products

• Red Hat Multicluster Engine For Kubernetes

Published 2026-05-29. Last modified 2026-07-21.