CVE-2026-46579
HIGHOpenshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-46579
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2483181
https://bugzilla.redhat.com/show_bug.cgi?id=2483181
Scores
CVSS v3
7.4
EPSS
0.0018
EPSS Percentile
7.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-287
Status
published
Products (4)
Red Hat/Red Hat OpenShift Container Platform 4
Red Hat/Red Hat OpenShift Container Platform 5
redhat/openshift_container_platform
4.0
redhat/openshift_router
Published
May 29, 2026
Tracked Since
May 29, 2026