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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.

PUBLISHED Reserved 2026-05-28 | Published 2026-05-29 | Updated 2026-06-08 | Assigner redhat




HIGH: 7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Problem types

Server-Side Request Forgery (SSRF)

Product status

Default status
affected

Default status
affected

Timeline

2026-04-17:Reported to Red Hat.
2026-04-17:Made public.

Credits

This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).

References

access.redhat.com/security/cve/CVE-2026-42965 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2483184 (RHBZ#2483184) issue-tracking

cve.org (CVE-2026-42965)

nvd.nist.gov (CVE-2026-42965)

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