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VULNERABILITIES

CVE-2026-42965 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA: redhat-SADPCVSS-B:7.7 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:54583 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:54602 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:54770 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:57408 redhat-SADP
https://access.redhat.com/security/cve/CVE-2026-42965 redhat-SADPVendor Advisory

see all 14 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-918Server-Side Request Forgery (SSRF)redhat-SADP
CWE-918Server-Side Request Forgery (SSRF)[email protected]

Affected Products

ProductVersions
redhat openshift container platform
4.0

CPE

  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat openshift router
All versions

CPE

  • cpe:2.3:a:redhat:openshift_router:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

21 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-42965
NVD Published Date:
May 29, 2026
NVD Last Modified:
Sep 21, 2026
Source:
[email protected]
CVE-2026-42965 Details - Not Deferred