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TI-2026-24783 Aliases CVE-2026-32254GHSA-phqm-jgc3-qf8g

Kube-router Proxy Module Blindly Trusts ExternalIPs/LoadBalancer IPs Enabling Cluster-Wide Traffic Hijacking and DNS DoS

Priority MEDIUM 64CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00316 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed kube-router (cloudnativelabs): 2.8.0github.com/cloudnativelabs/kube-router/v2 (Go): 2.8.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
cloudnativelabskube-routerbefore 2.8.02.8.0Patch availableCNA
—github.com/cloudnativelabs/kube-router/v2 (Go)before 2.8.02.8.0Patch availableGHSA-phqm-jgc3-qf8g
  • kube-router Vendorcloudnativelabs Affected before 2.8.0 Fixed in 2.8.0 Patch available CNA
  • github.com/cloudnativelabs/kube-router/v2 (Go) Vendor— Affected before 2.8.0 Fixed in 2.8.0 Patch available GHSA-phqm-jgc3-qf8g

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kube-router:kube-router:*:*:*:*:*:kubernetes:*:*before 2.8.0VulnerableKube-router
  • cpe:2.3:a:kube-router:kube-router:*:*:*:*:*:kubernetes:*:* Versions before 2.8.0 Vulnerable ·Kube-router

Remediation

  • Fix · CNA kube-router (cloudnativelabs) Fixed in 2.8.0
  • Fix · GHSA-phqm-jgc3-qf8g github.com/cloudnativelabs/kube-router/v2 (Go) Fixed in 2.8.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32254
  2. 2026-10-03 Alias added: GHSA-phqm-jgc3-qf8g

References

Exploit 1

Patch 1

Advisory 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences