CVE-2026-46579
High
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.
SeverityHigh
CVSS7.4
Exploit probability—
Product
Redhat Openshift Container Platform
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-287Improper authentication
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2026:27009
- access.redhat.com/errata/RHSA-2026:27044
- access.redhat.com/errata/RHSA-2026:27063
- access.redhat.com/errata/RHSA-2026:37580
- access.redhat.com/errata/RHSA-2026:40022
- access.redhat.com/errata/RHSA-2026:40828
- access.redhat.com/errata/RHSA-2026:43227
- access.redhat.com/errata/RHSA-2026:43253
- access.redhat.com/errata/RHSA-2026:43331
- access.redhat.com/errata/RHSA-2026:47703
- access.redhat.com/errata/RHSA-2026:47728
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat openshift_container_platform | 4.0 | — |
| redhat openshift_router | No range specified | — |
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