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CVE-2026-42965

nvd nist
Published: May 29, 2026Modified: Jul 21, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability: 2.8 / Impact: 3.6
Source: NVD

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.

Affected (2)

Redhat
2 products
Openshift Container Platform
Openshift Router
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Openshift Container Platform
Version 4.0
Openshift Router
All versions

Related CWEs

CWE-918
Server-Side Request Forgery (SSRF)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

References (5)

Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Issue TrackingVendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Issue TrackingVendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Timeline

No history available yet.