traefik has 66 CVEs on record between 2021 and 2026. Disclosure cadence is accelerating: 32 in the last 90 days against 11 in the 90 before. The busiest recent month was September 2026 with 14. The median CVSS is 7.5 (high), with 8 rated critical. None have a confirmed exploitation report. The dominant weakness classes are CWE-863 (8) and CWE-287 (6). Most affected products: traefik (38), github.com/traefik/traefik/v2 (14), github.com/traefik/traefik/v3 (8).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 7.5
- Publish → KEV
- —
- Last 90 days
- 32 prev 11
Products
- traefik 38
- github.com/traefik/traefik/v2 14
- github.com/traefik/traefik/v3 8
- github.com/traefik/traefik 6
Worst active — by depth score
CVE-2026-88877Critical· 9.8Traefik is a HTTP reverse proxy and load balancer66CVE-2026-85595Critical· 9.8Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection66CVE-2026-88008Critical· 9.1Traefik is an open source HTTP reverse proxy and load balancer62CVE-2026-88009High· 8.2Traefik is an open source HTTP reverse proxy and load balancer57CVE-2026-85596Critical· 9.8Traefik versions >= v3.7.0 and <= v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider54
traefik vulnerabilities
CVEs affecting traefik, newest first. Open any entry for full detail, references, and exploit status.
66 CVEsRSS
CVE-2026-114639High· 8.7Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass because a first request preauthenticated with an Authorization: Negotiate token authenticates a socket in the globally shared backend connection pool…
CVE-2026-114640High· 8.7Traefik v3.7.0 before v3.7.14 mTLS Header Spoofing via Ingress-NGINX HTTP Router
Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled al…
CVE-2026-114636High· 8.7Traefik v3.7.13 Authentication Bypass via ssl-passthrough Ingress HTTP Router
Traefik v3.7.13 before v3.7.14 contains an access-control bypass in the Kubernetes Ingress NGINX provider, where the HTTP router generated for ssl-passthrough Ingresses on non-TLS entry points never applies the Ingress's access-control a…
CVE-2026-114635High· 8.7Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme
Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header ov…
CVE-2026-114656High· 7.5Traefik before 2.11.58 and 3.7.13 mTLS Bypass via Negated Host Matcher
Traefik before 2.11.58 and 3.7.13 contains an authentication bypass vulnerability that allows unauthenticated clients to skip client-certificate checks because negated Host matchers are counted as served domains. Attackers can reach back…
CVE-2026-114638High· 8.7Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision
Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the Kubernetes Ingress NGINX provider that merges client CAs when auth-tls-secret names collide after dot-to-dash normalization. Attackers holding certifi…
CVE-2026-114642High· 8.7Traefik before 2.11.58 and 3.7.14 TLS Config Bypass via NTLM/Kerberos Round Tripper
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a client-connection slot not keyed by ServersTransport, so one service's TLS client configuration is reused for another service's bac…
CVE-2026-114641Low· 3.7Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper
Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. Remote…
CVE-2026-114637High· 8.7Traefik v3.2.0 before v3.7.14 FastProxy NTLM/Negotiate Connection Pool Identity Leak
Traefik from v3.2.0 before v3.7.14 contains an authentication bypass vulnerability in the experimental FastProxy connection pool, which fails to pin NTLM/Negotiate-authenticated backend connections to their frontend connection. Unauthent…
CVE-2026-112778Medium· 6.4Traefik before 2.11.46, 3.6.17, and 3.7.1 Cross-Namespace Resource Reference via Kubernetes Annotations
Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespa…
CVE-2026-88010Medium· 6.3Traefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.7.13, checkPassword in pkg/middlewares/auth/basic_auth.go constructs the BasicAuth singleflight key from the submitted password and stored secret. Concur…
CVE-2026-88012Medium· 5.3Traefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connectio…
CVE-2026-88877Critical· 9.8PoCTraefik is a HTTP reverse proxy and load balancer
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-…
CVE-2026-88009High· 8.2PoCTraefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path eval…
CVE-2026-88004High· 7.4Traefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. From 3.2.0 until 3.7.13, Traefik entrypoint defenses aliasHeadersStrategy, underscoreHeadersStrategy, and forwardedHeaders inspect req.Header but not req.Trailer, allowing a…
CVE-2026-88008Critical· 9.1PoC⚖ disputedTraefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backen…
CVE-2026-88011High· 8.1⚖ disputedTraefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy …
CVE-2026-88007Critical· 9.1Traefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.0 until 2.11.57 and 3.7.13, the HTTP/3 entrypoint ConnContext does not call service.AddTransportOnContext, so kerberosRoundTripper uses a shared backend transport …
CVE-2026-88879High· 8.2⚖ disputedTraefik is an HTTP reverse proxy and load balancer
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, X_Auth_User and X.Auth.User are treated as three disti…
CVE-2026-88878Medium· 5.3⚖ disputedTraefik is an HTTP reverse proxy and load balancer
Traefik is an HTTP reverse proxy and load balancer. In versions >= v2.8.2 through <= v2.11.55 and >= v3.0.0 through <= v3.7.11, the entryPoints.<name>.transport.respondingTimeouts settings — notably readTimeout, which is enabled by defau…
CVE-2026-85594Critical· 9.8⚖ disputedTraefik 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
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 th…
CVE-2026-85597Critical· 9.1Traefik 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…
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…
CVE-2026-85596Critical· 9.8⚖ disputedTraefik versions >= v3.7.0 and <= v3.7.10 contain an authentication bypass in the Kubernetes Ingress NGINX provider
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 af…
CVE-2026-85595Critical· 9.8PoCTraefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection
Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute …
CVE-2026-71326Low· 3.8Traefik is an open source HTTP reverse proxy and load balancer
Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basic_auth.go deduplicates concurrent password checks with a singleflight key bui…
CVE-2026-71327High· 8.1Traefik is an open source HTTP reverse proxy and load balancer
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 bui…
CVE-2026-54764Medium· 5.8Traefik: ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false
Traefik: ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false
CVE-2026-71325Medium· 4.4⚖ disputedTraefik is an open-source edge router that makes publishing services a fun and easy experience
Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolv…
CVE-2026-54765MediumTraefik: Gateway HTTPRoute backendRef filters can leak backend context across routes sharing a Service:port
Traefik: Gateway HTTPRoute backendRef filters can leak backend context across routes sharing a Service:port
CVE-2026-54763HighTraefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth
Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth