CVE-2026-42965

MediumCVSS 6.5/10Last modified Nov 4, 2026

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 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-918

Affected software

VendorProductVersions
Red HatRed Hat OpenShift Container Platform 4.17—
Red HatRed Hat OpenShift Container Platform 4.18—
Red HatRed Hat OpenShift Container Platform 4.19—
Red HatRed Hat OpenShift Container Platform 4.20—
Red HatRed Hat OpenShift Container Platform 4.21—
Red HatRed Hat OpenShift Container Platform 4.22—
Red HatRed Hat OpenShift Container Platform 4—
Red HatRed Hat OpenShift Container Platform 5—
Red HatRed Hat OpenShift Container Platform 4.19—
Red HatRed Hat OpenShift Container Platform 4.20—
Red HatRed Hat OpenShift Container Platform 4.21—
Red HatRed Hat OpenShift Container Platform 4.22—
Red HatRed Hat OpenShift Container Platform 4—

References

Timeline

Published
May 29, 2026
Last modified
Nov 4, 2026
NVD status
Modified

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CVE-2026-42965: Medium severity, CVSS 6.5 | Vulnix