Access Control Bypass Affecting github.com/cloudnativelabs/kube-router/v2/pkg/controllers/routing package, versions <2.8.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMCLOUDNATIVELABSKUBEROUTERV2PKGCONTROLLERSROUTING-15763253
- published25 Mar 2026
- disclosed18 Mar 2026
- creditb0b0haha, j311yl0v3u
Introduced: 18 Mar 2026
CVE-2026-32254 Â (opens in a new tab)How to fix?
Upgrade github.com/cloudnativelabs/kube-router/v2/pkg/controllers/routing to version 2.8.0 or higher.
Overview
Affected versions of this package are vulnerable to Access Control Bypass in the proxy module due to blindly trusting ExternalIPs/LoadBalancer IPs. An attacker can redirect cluster-wide network traffic or disrupt DNS services by assigning arbitrary external IPs or loadBalancer IPs without proper validation.
Workaround
This vulnerability can be mitigated by enabling the DenyServiceExternalIPs feature gate, deploying an admission policy, restricting service creation RBAC, monitoring service changes, or applying BGP prefix filtering.