CVE-2026-46579: Red Hat Openshift Container Platform

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.

Affected products

• Red Hat Openshift Container Platform: version 4.0 only
• Red Hat Openshift Router: affected versions not specified

Published 2026-05-29. Last modified 2026-09-10.