Incorrect Authorization Affecting github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd package, versions >=3.0.0 <3.6.25>=3.7.0 <3.7.10
Threat Intelligence
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMTRAEFIKTRAEFIKV3PKGPROVIDERKUBERNETESCRD-18612527
- published11 Aug 2026
- disclosed6 Aug 2026
- creditttzero25
Introduced: 6 Aug 2026
CVE-2026-71325 (opens in a new tab)How to fix?
Upgrade github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd to version 3.6.25, 3.7.10 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the nameAndService resolver in pkg/provider/kubernetes/crd/kubernetes_http.go. An attacker can bind an IngressRoute in their own namespace to another namespace's TraefikService by supplying a @kubernetescrd backend reference such as victim-name@kubernetescrd. When providers.kubernetesCRD.allowCrossNamespace is disabled, this lets a namespace-scoped tenant expose or reroute traffic to a backend they should not be able to reference. The result is broken namespace isolation in multi-tenant clusters, with an attacker able to serve requests through another tenant's service.