CVE-2026-42965: Openshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-42965?
The severity of CVE-2026-42965 is rated as high with a score of 7.7.
How do I fix CVE-2026-42965?
To fix CVE-2026-42965, update to the latest version of the Red Hat OpenShift Router that addresses this vulnerability.
What type of vulnerability is CVE-2026-42965?
CVE-2026-42965 is classified as a Server-Side Request Forgery (SSRF) vulnerability.
Who is affected by CVE-2026-42965?
Users of Red Hat OpenShift Router with EndpointSlice write access are affected by CVE-2026-42965.
What impact does CVE-2026-42965 have?
CVE-2026-42965 allows an attacker to proxy requests to cloud metadata endpoints, potentially exposing sensitive information.