Kube-router is a turnkey solution for Kubernetes networking. Prior to version 2.8.0, Kube-router's proxy module does not validate externalIPs or loadBalancer IPs before programming them into the node's network configuration. Version 2.8.0 contains a patch for the issue. Available workarounds include enabling DenyServiceExternalIPs feature gate, deploying admission policy, restricting service creation RBAC, monitoring service changes, and applying BGP prefix filtering.
History

Wed, 18 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 18 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Cloudnativelabs
Cloudnativelabs kube-router
Vendors & Products Cloudnativelabs
Cloudnativelabs kube-router

Wed, 18 Mar 2026 03:30:00 +0000

Type Values Removed Values Added
Description Kube-router is a turnkey solution for Kubernetes networking. Prior to version 2.8.0, Kube-router's proxy module does not validate externalIPs or loadBalancer IPs before programming them into the node's network configuration. Version 2.8.0 contains a patch for the issue. Available workarounds include enabling DenyServiceExternalIPs feature gate, deploying admission policy, restricting service creation RBAC, monitoring service changes, and applying BGP prefix filtering.
Title Kube-router Proxy Module Blindly Trusts ExternalIPs/LoadBalancer IPs Enabling Cluster-Wide Traffic Hijacking and DNS DoS
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-18T03:14:39.392Z

Updated: 2026-03-18T13:35:56.647Z

Reserved: 2026-03-11T14:47:05.686Z

Link: CVE-2026-32254

cve-icon Vulnrichment

Updated: 2026-03-18T13:35:47.222Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-18T04:17:24.340

Modified: 2026-03-18T14:52:44.227

Link: CVE-2026-32254

cve-icon Redhat

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