GHSA-FGJJ-PX3W-67XX Traefik: Gateway API route identity collision allows cross-namespace backend hijacking

Summary There is a high severity vulnerability in Traefik's Kubernetes Gateway API provider. Router and service identities for HTTPRoute, GRPCRoute, TCPRoute and TLSRoute objects were built by hyphen-concatenating the route namespace, the route name, the Gateway identity, the entry point and the...

CVE-2026-71327

CVE-2026-71327 - Traefik Gateway API route identity collision . Affected: Traefik’s Kubernetes Gateway API provider (HTTPRoute, GRPCRoute, TCPRoute, TLSRoute) from 3.0.0 to 3.6.25 and 3.7.10. Root cause: identities are built by hyphen-concatenating namespace, route name, Gateway identity, entry p...

CVE-2026-71327 Traefik: Gateway API route identity collision allows cross-namespace backend hijacking

Traefik is an open source HTTP reverse proxy and load balancer. From 3.0.0 until 3.6.25 and 3.7.10, Traefik's Kubernetes Gateway API provider in pkg/provider/kubernetes/gateway/httproute.go, grpcroute.go, tcproute.go, and tlsroute.go builds HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute router and...

BIT-HUBBLE-RELAY-2026-53935 CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation

Cilium is a networking, observability, and security solution. Prior to 1.17.16, from 1.18.2 to 1.18.9, and from 1.19.0 to 1.19.3, users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, enabling hijacking traffic to Services in any namespa...

BIT-CILIUM-2026-53935 CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation

Cilium is a networking, observability, and security solution. Prior to 1.17.16, from 1.18.2 to 1.18.9, and from 1.19.0 to 1.19.3, users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, enabling hijacking traffic to Services in any namespa...

BIT-CILIUM-OPERATOR-2026-53935 CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation

Cilium is a networking, observability, and security solution. Prior to 1.17.16, from 1.18.2 to 1.18.9, and from 1.19.0 to 1.19.3, users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, enabling hijacking traffic to Services in any namespa...

CVE-2026-53935 CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation

Cilium is a networking, observability, and security solution. Prior to 1.17.16, from 1.18.2 to 1.18.9, and from 1.19.0 to 1.19.3, users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, enabling hijacking traffic to Services in any namespa...

CVE-2026-53935

Cilium is a networking, observability, and security solution. Prior to 1.17.16, from 1.18.2 to 1.18.9, and from 1.19.0 to 1.19.3, users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, enabling hijacking traffic to Services in any namespa...