High severity7.7NVD Advisory· Published May 29, 2026· Updated Jun 8, 2026
CVE-2026-42965
CVE-2026-42965
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.
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Affected products
3- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_router:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:redhat:openshift_router:-:*:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
2- access.redhat.com/security/cve/CVE-2026-42965nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
News mentions
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