CVE-2026-16242: Hypershift: konnectivity proxy-server accepts agent connections without val

Description

A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat multicluster engine for Kubernetes 2.1

Default version status: affected

1784905766 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.1

Default version status: affected

1784905766 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.11

Default version status: affected

1784945966 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.17

Default version status: affected

1784856942 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.6

Default version status: affected

1784905804 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.8

Default version status: affected

1784905783 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.9

Default version status: affected

1784905769 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.14

Default version status: affected

1787001690 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.15

Default version status: affected

1787055132 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.16

Default version status: affected

1785534428 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.17

Default version status: affected

1784914869 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.18

Default version status: affected

1784912882 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.19

Default version status: affected

1784913720 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.20

Default version status: affected

1785288843 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.21

Default version status: affected

1785301941 to < *unaffected