CVE-2026-42965
HIGHOpenshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-42965
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2483184
https://bugzilla.redhat.com/show_bug.cgi?id=2483184
Scores
CVSS v3
7.7
EPSS
0.0021
EPSS Percentile
10.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (4)
Red Hat/Red Hat OpenShift Container Platform 4
Red Hat/Red Hat OpenShift Container Platform 5
redhat/openshift_container_platform
4.0
redhat/openshift_router
Published
May 29, 2026
Tracked Since
May 29, 2026