PT-2026-85495

Traefik versions before v2.11.55 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authenticatio...

CVE-2026-85596: Improper Authentication

Traefik versions = v3.7.0 and = v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider. The TLS option generated for an Ingress carrying the nginx.ingress.kubernetes.io/auth-tls-secret annotation was named after the Ingress namespace and name. As a result, two Ingress...

CVE-2026-85594: Authorization Bypass Through User-Controlled Key

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...

PT-2026-85494

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...

PT-2026-85497

Traefik before v2.11.55 contains a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiting shared TLS resolution...

CVE-2026-85597: Incorrect Authorization

Traefik before v2.11.55 and v3.0.0 through v3.7.10 contain a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiti...

Containous Traefik StripPrefix Bypass Access

The vulnerability of the intermediate software program StripPrefix of the Containous Traefik reverse proxy server relates to bypassing authentication by using an alternative path or channel. Exploiting this vulnerability allows a malicious actor to circumvent security restrictions and gain...

CVE-2026-82954 Dokploy Settings application.ts writeTraefikConfigInPath path traversal

A vulnerability was detected in Dokploy up to 0.29.7. This issue affects the function writeTraefikConfigInPath of the file packages/server/src/utils/traefik/application.ts of the component Settings. The manipulation of the argument path results in path traversal. The attack can be launched...

CVE-2026-71324

A flaw was found in Traefik. Traefik's HTTP reverse proxy can improperly handle HTTP/2 or HTTP/3 CONNECT requests forwarded to an HTTP/1.1 upstream. If the upstream sends a keep-alive non-2xx response and does not fully drain the body, the desynchronized backend socket is returned to a shared poo...

CVE-2026-71327

A flaw was found in Traefik, an open-source HTTP reverse proxy and load balancer. Its Kubernetes Gateway API provider incorrectly generates unique identifiers for routes and services. This vulnerability allows an attacker to create conflicting routes, which can then overwrite the backend services...

CVE-2026-71325

A flaw was found in Traefik. This flaw allows a tenant, even when restricted by Role-Based Access Control RBAC to a single namespace, to bypass namespace isolation. By binding their own router to a TraefikService in another namespace, an attacker can expose or reroute that namespace's backend...

FreeBSD : traefik -- Multiple vulnerabilities (b22fee3d-9f14-11f1-b948-5404a68ad561)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the b22fee3d-9f14-11f1-b948-5404a68ad561 advisory. The traefik project releases a new version addressing multiple vulnerabilities: Tenable has extracted t...

traefik -- Multiple vulnerabilities

The traefik project releases a new version addressing multiple vulnerabilities: GHSA-5w68-77r2-r64c Complete authentication bypass in the digestAuth middleware GHSA-g55h-rg46-x9c5 TLS option confusion in multi-host routers can bypass mTLS for protected hosts GHSA-j994-9gqj-9hwq Same-host Ingress...

GO-2026-6192 Traefik CRD IngressRouteTCP ServersTransport Cross-Provider Namespace Bypass in github.com/traefik/traefik

Traefik CRD IngressRouteTCP ServersTransport Cross-Provider Namespace Bypass in github.com/traefik/traefik...

GO-2026-6202 Traefik: ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false in github.com/traefik/traefik

Traefik: ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false in github.com/traefik/traefik...

GO-2026-6205 Traefik: Gateway HTTPRoute backendRef filters can leak backend context across routes sharing a Service:port in github.com/traefik/traefik

Traefik: Gateway HTTPRoute backendRef filters can leak backend context across routes sharing a Service:port in github.com/traefik/traefik...

GO-2026-6198 Traefik Gateway API HTTPRoute BackendRef ExtensionRef Namespace Confusion

Traefik Gateway API HTTPRoute BackendRef ExtensionRef Namespace Confusion. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability scanners, please...

GO-2026-6211 Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth in github.com/traefik/traefik

Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth in github.com/traefik/traefik...

GO-2026-6204 Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing in github.com/traefik/traefik

Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing in github.com/traefik/traefik...

GO-2026-6207 Traefik: Kubernetes Ingress NGINX RewriteTarget Path Traversal Allows Route-Level Authentication Bypass in github.com/traefik/traefik

Traefik: Kubernetes Ingress NGINX RewriteTarget Path Traversal Allows Route-Level Authentication Bypass in github.com/traefik/traefik...