FKIE_CVE-2026-46579

Vulnerability from fkie_nvd - Published: 2026-05-29 11:16 - Updated: 2026-06-30 03:20
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:27009
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:27044
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:27063
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-46579Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2483181Issue Tracking, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:27009
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:27044
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:27063
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-46579Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2483181Issue Tracking, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46579.json
Impacted products
Vendor Product Version
redhat openshift_container_platform 4.0
redhat openshift_router -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "cpes": [
            "cpe:/a:redhat:openshift:4.20::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift4/ose-haproxy-router-rhel9",
          "product": "Red Hat OpenShift Container Platform 4.20",
          "vendor": "Red Hat",
          "versions": [
            {
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            }
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          "product": "Red Hat OpenShift Container Platform 4.21",
          "vendor": "Red Hat",
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              "version": "1781552170",
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            }
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        },
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          "product": "Red Hat OpenShift Container Platform 4.22",
          "vendor": "Red Hat",
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              "status": "unaffected",
              "version": "1781643967",
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            }
          ]
        },
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          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "openshift4/ose-haproxy-router",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    },
    {
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          "vendor": "Red Hat"
        },
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          "vendor": "Red Hat"
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          "vendor": "Red Hat"
        },
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          "vendor": "Red Hat"
        }
      ],
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    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE",
              "vulnerable": true
            },
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              "matchCriteriaId": "EB6C1612-6A17-4F3B-B170-7C9F6028FBBB",
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            }
          ],
          "negate": false,
          "operator": "OR"
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      ]
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  ],
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    }
  ],
  "id": "CVE-2026-46579",
  "lastModified": "2026-06-30T03:20:22.713",
  "metrics": {
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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            {
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            {
              "technicalImpact": "total"
            }
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          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T13:16:55.280769Z",
          "version": "2.0.3"
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  "published": "2026-05-29T11:16:17.050",
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}


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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.