CVE-2026-46579 Auth bypass in Red Hat OpenShift Container Platform 4.12

High 7.4 Published 29 May 2026 Updated 10 Sep 2026

Attackers can bypass mutual TLS authentication by injecting spoofed client certificate headers when insecure edge termination is enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-46579?

CVE-2026-46579 is a high-severity authentication bypass vulnerability in Redhat Openshift Container Platform, published on 29 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-287

Which versions are affected by CVE-2026-46579?

It affects 2 products.

Products include Redhat Openshift Container Platform, Redhat Openshift Router.

How do I fix CVE-2026-46579?

No fix has been published for CVE-2026-46579 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-46579 being exploited?

There is no known exploitation of CVE-2026-46579 in the wild and no public exploit code.

All Redhat Openshift Container Platform vulnerabilities

Sources

Also known as GHSA-ccmj-8c3p-4qwj.