GO-2026-6454 Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded in github.com/traefik/traefik

Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded in github.com/traefik/traefik...

GO-2026-6468 Traefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect Authorization in github.com/traefik/traefik

Traefik: Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' and Incorrect Authorization in github.com/traefik/traefik...

GO-2026-6467 Traefik entrypoint header-name sanitization bypassed via request trailers in github.com/traefik/traefik

Traefik entrypoint header-name sanitization bypassed via request trailers in github.com/traefik/traefik...

GO-2026-6455 Traefik: ForwardAuth identity spoofing via dot-form header alias in github.com/traefik/traefik

Traefik: ForwardAuth identity spoofing via dot-form header alias in github.com/traefik/traefik...

GO-2026-6465 Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging in github.com/traefik/traefik

Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging in github.com/traefik/traefik...

CVE-2026-85595

An authentication bypass vulnerability was discovered in Traefik's digestAuth middleware. When an incoming request contains a username that does not exist in the configured authentication store, the application fails to reject the request and instead evaluates the credential against an empty stri...

CVE-2026-88878

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. When HTTP/3 is enabled, an unauthenticated remote client can exploit a timeout bypass vulnerability by trickling request body bytes. This allows the client to hold a request open indefinitely, exhausting backend connection pool...

SUSE CVE-2026-88877

Traefik is a HTTP reverse proxy and load balancer. In versions = v3.7.0 and = v3.7.11, the Kubernetes ingress-nginx provider mishandles Ingresses that carry both an authentication annotation and the nginx.ingress.kubernetes.io/from-to-www-redirect annotation. For such Ingresses the provider creat...

SUSE CVE-2026-88878

Traefik is an HTTP reverse proxy and load balancer. In versions = v2.8.2 through = v3.0.0 through .transport.respondingTimeouts settings - notably readTimeout, which is enabled by default at 60s - are not applied to the HTTP/3 request path. readTimeout is enforced as a deadline on the underlying...

SUSE CVE-2026-88879

Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, XAuthUser and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable...

CVE-2026-88877

A flaw was found in Traefik's Kubernetes ingress-nginx provider. A remote attacker, by sending a specially crafted request with a malformed Host header e.g., containing a non-numeric port, can bypass security middlewares, including authentication and IP allowlisting. This leads to unauthorized...

CVE-2026-88879

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. Due to a discrepancy in how Traefik and certain backend applications process HTTP header names, a remote attacker can smuggle specially crafted headers. This allows the attacker to bypass identity assertions made by Traefik,...

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...

CVE-2026-85596

A flaw was found in Traefik. This vulnerability allows a remote attacker to bypass authentication, gaining unauthorized access to protected routes. This occurs due to a conflict in how Traefik handles Transport Layer Security TLS options when specific Kubernetes Ingress objects are configured. Th...

CVE-2026-67309

A flaw was found in Traefik. This path traversal vulnerability exists in the Kubernetes Ingress NGINX provider's RewriteTarget middleware. A remote attacker can craft a special request that uses dot-segment traversal to bypass authentication mechanisms like BasicAuth, DigestAuth, or ForwardAuth...

CVE-2026-88009

creationtimestamp| type| source ---|---|--- 2026-09-11 00:35:10+00:00| published-proof-of-concept| https://github.com/traefik/traefik/security/advisories/GHSA-f52w-8j3h-j724 2026-09-15 08:07:07+00:00| seen| https://bsky.app/profile/cyberhub.blog/post/3mvk66pn6222v...

CVE-2026-88004

creationtimestamp| type| source ---|---|--- 2026-09-11 00:35:05+00:00| published-proof-of-concept| https://github.com/traefik/traefik/security/advisories/GHSA-v67p-phpq-fc8x...

CVE-2026-88008

creationtimestamp| type| source ---|---|--- 2026-09-11 00:35:03+00:00| published-proof-of-concept| https://github.com/traefik/traefik/security/advisories/GHSA-w4v4-9rw7-5326 2026-09-27 23:00:08+00:00| seen| https://t.me/GithubRedTeam/103588 2026-09-27 23:00:08+00:00| published-proof-of-concept|...

PT-2026-89803

🟠 Traefik, HTTP/3 respondingTimeouts Not Applied, CVE-2025-66677 Medium -DC-Sep2026-2341 https://t.co/KzeTN451Ry...

Traefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect Authorization

Summary There is a high-severity request-smuggling vulnerability in Traefik's handling of the HTTP/1.1 Upgrade mechanism. Since Traefik moved to unencrypted HTTP/2 with prior knowledge Go 1.24, a client-initiated Upgrade: h2c request header and its connection-specific HTTP2-Settings header were...