Traefik Gateway API HTTPRoute BackendRef ExtensionRef Namespace Confusion

Summary There is a medium-severity namespace-confusion vulnerability in Traefik's Kubernetes Gateway API provider. When resolving HTTPRoute.spec.rules.backendRefs.filters.extensionRef, Traefik used the backend Service namespace instead of the HTTPRoute namespace. A low-privileged route author...

CVE-2026-54765

A flaw was found in Traefik's Kubernetes Gateway API provider. An attacker capable of creating an accepted HTTPRoute that shares the same backend Service and port could exploit this vulnerability. The system may incorrectly apply the attacker's route filter context to another route's requests,...

CVE-2026-65601 Traefik before 3.7.7 Namespace Confusion via HTTPRoute ExtensionRef

Traefik versions 3.7.0 through 3.7.6 contain a namespace confusion vulnerability in the Kubernetes Gateway API provider. When resolving HTTPRoute.spec.rules.backendRefs.filters.extensionRef, Traefik used the backend Service namespace instead of the HTTPRoute namespace. A low-privileged route auth...

CVE-2026-54765

Traefik is an open source HTTP reverse proxy and load balancer. From v3.7.0 prior to v3.7.6, Traefik's Kubernetes Gateway API provider may resolve two accepted HTTPRoutes that target the same backend Service:port but configure different backendRef filters to the same child service and apply only...

GO-2026-5420 kubernetes-graphql-gateway: GraphQL Endpoint Vulnerable to Authenticated Denial-of-Service via Unrestricted Query Execution in github.com/platform-mesh/kubernetes-graphql-gateway

kubernetes-graphql-gateway: GraphQL Endpoint Vulnerable to Authenticated Denial-of-Service via Unrestricted Query Execution in github.com/platform-mesh/kubernetes-graphql-gateway...

GO-2026-5083 Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services in github.com/traefik/traefik

Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services in github.com/traefik/traefik...

CVE-2026-54761

Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.21 and 3.7.5, there is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlis...

EUVD-2026-38577

Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.21 and 3.7.5, there is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlis...

CVE-2026-54761 Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services

Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.21 and 3.7.5, there is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlis...

CVE-2026-54761

Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.21 and 3.7.5, there is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlis...

CVE-2026-54761 Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services

Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.21 and 3.7.5, there is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlis...

CVE-2026-54761

Traefik vulnerability CVE-2026-54761 affects the Kubernetes Gateway provider: prior to 3.6.21 and 3.7.5, the crossProviderNamespaces allowlist is checked against backendRef.namespace instead of the HTTPRoute’s own namespace, enabling an attacker in a non-allowlisted namespace to reference interna...

Exploit for CVE-2026-54761

CVE-2026-54761: Traefik Kubernetes Gateway crossProviderNamesp...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the evaluation of the crossProviderNamespaces allowlist within the Kubernetes Gateway provider. An attacker can gain unauthorized access to internal services by creating an HTTPRoute in a non-allow-listed...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the evaluation of the crossProviderNamespaces allowlist within the Kubernetes Gateway provider. An attacker can gain unauthorized access to internal services by creating an HTTPRoute in a non-allow-listed...

Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services

Summary There is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlist against the target backendRef.namespace instead of the route's own...

GHSA-3G6V-2R68-PRFC Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services

Summary There is a high severity vulnerability in Traefik's Kubernetes Gateway provider affecting the crossProviderNamespaces allowlist. For HTTPRoute rules that declare multiple WRR backendRefs, Traefik evaluates the allowlist against the target backendRef.namespace instead of the route's own...

PT-2026-50495

Name of the Vulnerable Software and Affected Versions Traefik versions prior to 3.6.21 Traefik versions prior to 3.7.5 Description An issue exists in the Kubernetes Gateway provider regarding the crossProviderNamespaces allowlist. When HTTPRoute rules declare multiple backendRefs Weighted Round...

CVE-2026-44774

A flaw was found in Traefik. A low-privileged tenant with HTTPRoute creation permissions in Traefik's Kubernetes Gateway API provider can bypass security settings. This allows the tenant to expose the REST provider handler and gain live dynamic configuration write access to Traefik. This...

GHSA-VVGJ-X9JQ-8CJ9 vulnerabilities

Vulnerabilities for packages: traefik, prometheus-blackbox-exporter, kargo, opentelemetry-operator, kubo, ipfs-cluster, kubernetes-dns-node-cache, teleport, dkron, frp, jitsucom-bulker, k8sgateway, kyverno-policy-reporter, q, kube-metrics-adapter, kyverno-policy-reporter-ui, coredns, k3s, spegel...