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.
Published: 2026-05-29
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 23 Jun 2026 10:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.22::el9
References

Tue, 23 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.20::el9
cpe:/a:redhat:openshift:4.21::el9
References

Mon, 08 Jun 2026 15:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:5

Mon, 08 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Router
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_router:-:*:*:*:*:*:*:*
Vendors & Products Redhat openshift Router

Fri, 05 Jun 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:5

Fri, 29 May 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform

Fri, 29 May 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 29 May 2026 10:30:00 +0000

Type Values Removed Values Added
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.
Title Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
First Time appeared Redhat
Redhat openshift
Weaknesses CWE-287
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat
Redhat openshift
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Redhat Openshift Openshift Container Platform Openshift Router
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-06-23T09:43:12.915Z

Reserved: 2026-05-28T06:07:06.526Z

Link: CVE-2026-46579

cve-icon Vulnrichment

Updated: 2026-05-29T13:17:00.811Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-29T11:16:17.050

Modified: 2026-06-08T14:23:54.803

Link: CVE-2026-46579

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-08T17:30:06Z

Weaknesses