CVE-2026-32254
Kube-router is a turnkey solution for Kubernetes networking.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- EPSS
- 0.30% probability · 22th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- kube-router/kube-router
- Source
- security-advisories@github.com
References
- https://github.com/cloudnativelabs/kube-router/commit/a1f0b2eea3ee0f66b9a5b5c49dcb714619ccd456Patch
- https://github.com/cloudnativelabs/kube-router/releases/tag/v2.8.0Product, Release Notes
- https://github.com/cloudnativelabs/kube-router/security/advisories/GHSA-phqm-jgc3-qf8gExploit, Mitigation, Patch, Vendor Advisory
- https://github.com/cloudnativelabs/kube-router/security/advisories/GHSA-phqm-jgc3-qf8gExploit, Mitigation, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.