CVE-2026-42965
7.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Summary
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
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-918: Server-Side Request Forgery (SSRF)
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
openshift/router: openshift/router: cloud metadata SSRF via FQDN-typed EndpointSlice bypasses destination validation
Additional References
- https://access.redhat.com/security/cve/CVE-2026-42965
- https://bugzilla.redhat.com/show_bug.cgi?id=2483184
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42965.json
References
- https://access.redhat.com/security/cve/CVE-2026-42965
- https://bugzilla.redhat.com/show_bug.cgi?id=2483184
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.