CVE-2026-16242

critical

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.

References

https://github.com/openshift/hypershift/pull/9031

https://bugzilla.redhat.com/show_bug.cgi?id=2502690

https://access.redhat.com/security/cve/CVE-2026-16242

https://access.redhat.com/errata/RHSA-2026:47388

https://access.redhat.com/errata/RHSA-2026:46885

Details

Source: Mitre, NVD

Published: 2026-07-20

Updated: 2026-07-28

Risk Information

CVSS v2

Base Score: 9.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:P

Severity: High

CVSS v3

Base Score: 9.4

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Severity: Critical

EPSS

EPSS: 0.00367