CVE-2026-54761-poc

CVE-2026-54761: Traefik Kubernetes Gateway crossProviderNamespaces Bypass PoC English version 概要 このリポジトリは、Traefik の Kubernetes Gateway provider に存在する高深刻度の脆弱性 CVE-2026-54761 を、ローカル環境で再現するための Proof of Concept PoC です。 この脆弱性は crossProviderNamespaces の許可リストに影響します。複数の重み付きバックエンド参照を宣言する HTTPRoute...

CVE-2026-85594

A flaw was found in Traefik. The software fails to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation within the Kubernetes Ingress provider. This vulnerability allows a namespace-limited tenant, even if excluded from the...

SUSE CVE-2026-85594

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its...

CVE-2026-85594

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its...

CVE-2026-85594 Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its...

CVE-2026-85594 Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its...

CVE-2026-85594 Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its...

CVE-2026-85594

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider . A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its ...

CVE-2026-65602 Traefik before 3.6.23 IngressRouteTCP ServersTransport Namespace Bypass

Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references the allowlist was only enforced for HTTP serversTransport references. A low-privileged Kubernetes user in a namespace not listed in...

CVE-2026-65602

Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references the allowlist was only enforced for HTTP serversTransport references. A low-privileged Kubernetes user in a namespace not listed in...