Security Flaw in OpenShift Router Affects Client Certificate Authentication
CVE-2026-46579

7.4HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Container Platform 4
Vendor
CVE Published:
29 May 2026

What is CVE-2026-46579?

A security flaw in the OpenShift Router arises when the insecureEdgeTerminationPolicy is set to Allow. In this scenario, the HTTP frontend fails to strip X-SSL-Client-* headers from incoming requests. Consequently, an unauthorized attacker can exploit this flaw by sending non-encrypted HTTP requests that contain specifically crafted X-SSL-Client-* headers. This exploitation allows the attacker to bypass mutual TLS authentication mechanisms, thereby impersonating client certificate identities, which can lead to unauthorized access to sensitive backend services.

References

https://access.redhat.com/security/cve/CVE-2026-46579
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2483181
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).
.