---
id: CVE-2026-46579
title: A flaw was found in the OpenShift Router
summary: >-
  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 p…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-287
vendor: redhat
product: openshift_container_platform
affected:
  - openshift_container_platform = 4.0
  - openshift_router
published: '2026-05-29'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T13:20:19.130'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46579'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:27009'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:27044'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:27063'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:37580'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:40022'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:40828'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:43227'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:43253'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:43331'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47703'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47728'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-46579'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2483181'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:27009'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:27044'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:27063'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:37580'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:40022'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:40828'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:43227'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:43253'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:43331'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:47703'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:47728'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-46579'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2483181'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46579.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-05-29T13:16:55.280769Z'
epss: 0.00622
epssPercentile: 0.47502
ingestedAt: '2026-07-16T02:48:55.035Z'
---

## Overview

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.

## Affected

- `openshift_container_platform = 4.0`
- `openshift_router`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.