CVE-2026-42965
High
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.
SeverityHigh
CVSS7.7
Exploit probability—
Product
Redhat Openshift Container Platform
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat openshift_container_platform | 4.0 | — |
| redhat openshift_router | No range specified | — |
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