{
  "threat_severity" : "Important",
  "public_date" : "2026-04-17T20:10:23Z",
  "bugzilla" : {
    "description" : "openshift/router: openshift/router: mTLS client certificate spoofing via unstripped X-SSL-Client headers on HTTP frontend",
    "id" : "2483181",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2483181"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.4",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-287",
  "details" : [ "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.", "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." ],
  "acknowledgement" : "This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).",
  "affected_release" : [ {
    "product_name" : "Red Hat OpenShift Container Platform 4.20",
    "release_date" : "2026-06-23T00:00:00Z",
    "advisory" : "RHSA-2026:27063",
    "cpe" : "cpe:/a:redhat:openshift:4.20::el9",
    "package" : "openshift4/ose-haproxy-router-rhel9:1781639027"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.21",
    "release_date" : "2026-06-23T00:00:00Z",
    "advisory" : "RHSA-2026:27044",
    "cpe" : "cpe:/a:redhat:openshift:4.21::el9",
    "package" : "openshift4/ose-haproxy-router-rhel9:1781552170"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4.22",
    "release_date" : "2026-06-23T00:00:00Z",
    "advisory" : "RHSA-2026:27009",
    "cpe" : "cpe:/a:redhat:openshift:4.22::el9",
    "package" : "openshift4/ose-haproxy-router-rhel9:1781643967"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Affected",
    "package_name" : "openshift4/ose-haproxy-router",
    "cpe" : "cpe:/a:redhat:openshift:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-46579\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46579" ],
  "name" : "CVE-2026-46579",
  "csaw" : false
}