Incorrect Authorization Affecting github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd package, versions >=3.6.17 <3.6.23>=3.7.1 <3.7.7
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.
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- published11 Aug 2026
- disclosed22 Jul 2026
- creditCuB3y0nd, james-yusuke
Introduced: 22 Jul 2026
CVE-2026-65602 (opens in a new tab)How to fix?
Upgrade github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd to version 3.6.23, 3.7.7 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization via pkg/provider/kubernetes/crd/kubernetes_tcp.go through makeTCPServersTransportKey when processing IngressRouteTCP service serversTransport references. An attacker can make Traefik accept a forbidden cross-provider transport such as foo@file by submitting an IngressRouteTCP resource from a namespace that is not listed in crossProviderNamespaces. This lets the attacker cause Traefik to use an operator-defined TCPServersTransport with its backend TLS client certificates, SPIFFE identity, or PROXY-protocol settings, which can relay privileged backend identity and alter how the proxy connects to upstream services.