Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-46579
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-29 11:16:17 UTC
Updated2026-06-30 03:20:22 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.002300000 probability, percentile 0.137900000 (date 2026-07-04)

Problem Types: CWE-287 | NVD-CWE-noinfo | CWE-287 Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.1ADPCVSS7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1[email protected]Secondary7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.10b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1CNACVSS7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Redhat Openshift Container Platform 4.0 All All All
Application Redhat Openshift Router - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat OpenShift Container Platform 4.20 unaffected 1781639027 * rpm Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4.21 unaffected 1781552170 * rpm Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4.22 unaffected 1781643967 * rpm Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified
ADP Red Hat Red Hat OpenShift Container Platform 4.20 Not specified Not specified
ADP Red Hat Red Hat OpenShift Container Platform 4.21 Not specified Not specified
ADP Red Hat Red Hat OpenShift Container Platform 4.22 Not specified Not specified
ADP Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified

References

ReferenceSourceLinkTags
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46579.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c security.access.redhat.com
access.redhat.com/errata/RHSA-2026:27044 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
access.redhat.com/security/cve/CVE-2026-46579 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2026:27063 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
access.redhat.com/errata/RHSA-2026:27009 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
bugzilla.redhat.com/show_bug.cgi 0b0ca135-0b70-47e7-9f44-1890c2a1c46c bugzilla.redhat.com Issue Tracking, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

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

Additional Advisory Data

SourceTimeEvent
CNA2026-04-17T20:10:23.000ZReported to Red Hat.
CNA2026-04-17T20:10:23.000ZMade public.
ADP2026-04-17T20:10:23.000ZReported to Red Hat.
ADP2026-04-17T20:10:23.000ZMade public.

Solutions

ADP: RHSA-2026:27063: Red Hat OpenShift Container Platform 4.20

ADP: RHSA-2026:27044: Red Hat OpenShift Container Platform 4.21

ADP: RHSA-2026:27009: Red Hat OpenShift Container Platform 4.22

© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report