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Vulnerability record · CVE-2026-32254 · published 18 March 2026

CVE-2026-32254: Kube-router improper access control vulnerability

KKube Router · Kube Router

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.

7.1 CVSS 3.1 High EPSS 0.45% · top 63.7% CWE-284 · Improper access control
7.1CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/cloudnativelabs/kube-router/commit/a1f0b2eea3ee0f66b9a5b5c49dcb714619ccd456 Patch
https://github.com/cloudnativelabs/kube-router/releases/tag/v2.8.0 ProductRelease Notes
https://github.com/cloudnativelabs/kube-router/security/advisories/GHSA-phqm-jgc3-qf8g ExploitMitigationPatchVendor Advisory
https://github.com/cloudnativelabs/kube-router/security/advisories/GHSA-phqm-jgc3-qf8g ExploitMitigationPatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-32254), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.