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    CVE-2026-46579

    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:May 29, 2026
    Last Modified:Aug 6, 2026
    EPS:May 29, 2026
    EPSS Score:0.00339
    CVSS Score:7.4

    Affected Products

    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Redhat
    Product
    Openshift Container Platform
    Vendor
    Redhat
    Product
    Openshift Router

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

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    References

    https://access.redhat.com/errata/RHSA-2026:27009
    https://access.redhat.com/errata/RHSA-2026:27044
    https://access.redhat.com/errata/RHSA-2026:27063
    https://access.redhat.com/errata/RHSA-2026:37580
    https://access.redhat.com/errata/RHSA-2026:40022
    https://access.redhat.com/errata/RHSA-2026:40828
    https://access.redhat.com/errata/RHSA-2026:43227
    https://access.redhat.com/errata/RHSA-2026:43253
    https://access.redhat.com/errata/RHSA-2026:43331
    https://access.redhat.com/errata/RHSA-2026:47703
    https://access.redhat.com/errata/RHSA-2026:47728
    https://access.redhat.com/security/cve/CVE-2026-46579
    https://bugzilla.redhat.com/show_bug.cgi?id=2483181
    https://access.redhat.com/errata/RHSA-2026:27009
    https://access.redhat.com/errata/RHSA-2026:27044
    https://access.redhat.com/errata/RHSA-2026:27063
    https://access.redhat.com/errata/RHSA-2026:37580
    https://access.redhat.com/errata/RHSA-2026:40022
    https://access.redhat.com/errata/RHSA-2026:40828
    https://access.redhat.com/errata/RHSA-2026:43227
    https://access.redhat.com/errata/RHSA-2026:43253
    https://access.redhat.com/errata/RHSA-2026:43331
    https://access.redhat.com/errata/RHSA-2026:47703
    https://access.redhat.com/errata/RHSA-2026:47728
    https://access.redhat.com/security/cve/CVE-2026-46579
    https://bugzilla.redhat.com/show_bug.cgi?id=2483181
    https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46579.json

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High