CVE-2026-46579 (GCVE-0-2026-46579)

Vulnerability from cvelistv5 – Published: 2026-05-29 09:50 – Updated: 2026-08-04 13:08
VLAI
Title
Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
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 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.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:27009 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27044 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27063 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:37580 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:40022 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:40828 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:43227 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:43253 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:43331 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-46579 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2483181 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
Impacted products
Vendor Product Version
Red Hat Red Hat OpenShift Container Platform 4.13 Unaffected: 1784056734 , < * (rpm)
    cpe:/a:redhat:openshift:4.13::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.14 Unaffected: 1784587649 , < * (rpm)
    cpe:/a:redhat:openshift:4.14::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.15 Unaffected: 1784580646 , < * (rpm)
    cpe:/a:redhat:openshift:4.15::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.16 Unaffected: 1784331638 , < * (rpm)
    cpe:/a:redhat:openshift:4.16::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.18 Unaffected: 1783719377 , < * (rpm)
    cpe:/a:redhat:openshift:4.18::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.19 Unaffected: 1783445642 , < * (rpm)
    cpe:/a:redhat:openshift:4.19::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.20 Unaffected: 1781639027 , < * (rpm)
    cpe:/a:redhat:openshift:4.20::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.21 Unaffected: 1781552170 , < * (rpm)
    cpe:/a:redhat:openshift:4.21::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.22 Unaffected: 1781643967 , < * (rpm)
    cpe:/a:redhat:openshift:4.22::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4.2 Unaffected: 1781639027 , < * (rpm)
    cpe:/a:redhat:openshift:4.20::el9
 Create a notification for this product.
Date Public
2026-04-17 20:10
Credits
This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).
Show details on NVD website
To clipboard 

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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.