CVE-2026-42965

[CVE catalog]

A flaw was found in the OpenShift Router. A user with EndpointSlice write access can exploit this vulnerability by creating a Service backed by an FQDN (Fully Qualified Domain Name) EndpointSlice that resolves to a cloud metadata endpoint. This allows the router to proxy requests to the cloud metadata endpoint, leading to the disclosure of instance credentials and other sensitive metadata. This bypasses previous security measures for validating IP addresses. openshift/router: openshift/router: cloud metadata SSRF via FQDN-typed EndpointSlice bypasses destination validation The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Severity

High · CVSS 7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Published

Apr 17, 2026, 9:46:19 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.40% · Oct 27, 2026

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  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "openshift_container_platform",
      "ecosystem": "cpe",
      "fixed_version": ""
    },
    {
      "name": "openshift_router",
      "ecosystem": "cpe",
      "fixed_version": ""
    },
    {
      "name": "openshift_container_platform",
      "ranges": [],
      "ecosystem": "cpe",
      "fixed_version": "",
      "provider_record_id": "NVD-CVE-2026-42965"
    },
    {
      "name": "openshift_router",
      "ranges": [],
      "ecosystem": "cpe",
      "fixed_version": "",
      "provider_record_id": "NVD-CVE-2026-42965"
    }
  ]
}