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CVE-2026-42965— Openshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation

CVSS 7.7 · High EPSS 0.23% · P13

Affected Version Matrix 2

VendorProductVersion RangeStatus
Red HatRed Hat OpenShift Container Platform 4anyaffected
anyaffected
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I. Basic Information for CVE-2026-42965

Vulnerability Information
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Vulnerability Title
Openshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat OpenShift 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat OpenShift是美国红帽（Red Hat）公司的一款平台即服务（PaaS）云计算平台，它支持构建、测试、部署和运行应用程序。 Red Hat OpenShift存在代码问题漏洞，该漏洞源于具有EndpointSlice写入权限的用户可通过创建由解析到云元数据端点的FQDN EndpointSlice支持的Service，导致路由器代理请求到云元数据端点，从而泄露实例凭证和其他敏感元数据，绕过了之前的IP地址验证安全措施。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-42965

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III. Intelligence Information for CVE-2026-42965

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Vendor Advisories for CVE-2026-42965 (2)

Same Patch Batch · Red Hat · 2026-05-29 · 6 CVEs total

CVE-2026-465797.4 HIGHOpenshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-
CVE-2026-101016.3 MEDIUMAssisted-service: assisted-service: infraenv status leaks referenced pull-secret contents
CVE-2026-63244.8 MEDIUMLibsoup: libsoup: http request smuggling via unsigned to signed conversion error
CVE-2026-100524.1 MEDIUMQuay/config-tool: quay/config-tool: ssrf via unfiltered ldap and smtp config validation en
CVE-2026-100782.7 LOWQuay/config-tool: quay/config-tool: gitlab oauth client_secret exposed in url querystring

IV. Related Vulnerabilities

Same product: Red Hat OpenShift Container Platform 4
Same vendor: Red Hat
Same weakness: CWE-918

V. Comments for CVE-2026-42965

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