authelia

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Traefik - Open Redirect

Traefik before 1.7.26, 2.2.8, and 2.3.0-rc3 contains an open redirect vulnerability in the X-Forwarded-Prefix header. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations. id: CVE-2020-15129 info: name:...

traefik-CVE-2024-45410-poc

Shadow Corp CTF Challenge Welcome to the Shadow Corp Capture the Flag CTF challenge! This challenge will test your skills in identifying and exploiting vulnerabilities related to security headers and HTTP proxy behavior. Your mission is to bypass protections and uncover secrets hidden within the...

GO-2026-6558 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle. 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 fr...

traefik-stripprefix-auth-bypass-cve-2026-48020-path-normalization

CVE-2026-48020 — Traefik StripPrefix Route-Level Auth Bypass PoC A self-contained proof of concept for CVE-2026-48020 , a route-level authentication/authorization bypass in Traefik's StripPrefix middleware caused by path normalisation happening after routing decisions are made. A request such as...

Exploit for Incorrect Authorization in Traefik

CVE-2026-88008 — Traefik: unauthorised h2c upgrade tunnels pas...

CVE-2026-54761-poc

CVE-2026-54761: Bypass de crossProviderNamespaces en Traefik Kubernetes Gateway PoC Versión en inglés Resumen Este repositorio es una prueba de concepto PoC para reproducir localmente la vulnerabilidad de alta gravedad CVE-2026-54761 presente en el proveedor Kubernetes Gateway de Traefik. Esta...

CVE-2026-88877-PoC-pwnVader

CVE-2026-88877 — Traefik v3.7.0–v3.7.11 — Authentication bypass via from-to-www-redirect Author: pwnVader · License: MIT repository root | ---|--- Component| Traefik Kubernetes ingress-nginx provider, providers.kubernetesingressnginx Type| CWE-639 — Authorization bypass through user-controlled ke...

Exploit for Authorization Bypass Through User-Controlled Key in Traefik

CVE-2026-88877 — Traefik v3.7.0–v3.7.11 — Authentication b...

CVE-2026-88010

creationtimestamp| type| source ---|---|--- 2026-09-22 22:35:06+00:00| published-proof-of-concept| https://github.com/traefik/traefik/security/advisories/GHSA-8fcf-v89g-xpg6 2026-09-22 23:31:56+00:00| seen| https://gist.github.com/alon710/af64fb0e4974981b0997528347311521 2026-09-23 00:00:39+00:00...

GHSA-8FCF-V89G-XPG6 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Summary Traefik's BasicAuth middleware coalesces concurrent credential checks through a singleflight.Group to avoid hashing the same password many times at once. Since v3.6.11 the deduplication key was built from the submitted password plus the stored secret, so it depended on server state: a...

Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Summary Traefik's BasicAuth middleware coalesces concurrent credential checks through a singleflight.Group to avoid hashing the same password many times at once. Since v3.6.11 the deduplication key was built from the submitted password plus the stored secret, so it depended on server state: a...

CVE-2026-88011

A flaw was found in Traefik, an open-source HTTP reverse proxy and load balancer. A remote attacker can exploit this vulnerability by sending a specially crafted dot-form header, such as X.Authenticated.User. Due to a discrepancy in how Go and certain backend systems like CGI, WSGI, PHP, and NGIN...

CVE-2026-88010

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.7.13, checkPassword in pkg/middlewares/auth/basicauth.go constructs the BasicAuth singleflight key from the submitted password and stored secret. Concurrent requests for absent usernames therefore coalesce on one...

CVE-2026-88004

A flaw was found in Traefik, an open-source HTTP reverse proxy and load balancer. Its entrypoint defenses, designed to sanitize header names, failed to inspect request trailers. This allowed an unauthenticated client to submit malicious header names within HTTP/1.1 chunked or HTTP/2 trailers...

CVE-2026-88012

A flaw was found in Traefik, an open-source HTTP reverse proxy and load balancer. Its HTTP/3 entrypoints do not correctly apply read timeouts, which are intended to prevent prolonged connections. An unauthenticated client can exploit this by sending a slow request body, continuously trickling dat...

CVE-2026-88008

A flaw was found in Traefik, an open source HTTP reverse proxy and load balancer. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted HTTP/2 request that includes specific upgrade headers. If the backend server accepts the upgrade, Traefik enters a raw...

CVE-2026-88007

A flaw in Traefik's HTTP/3 ConnContext allows unauthenticated remote attackers to bypass authentication on backends using connection-bound NTLM or Negotiate protocols. Missing service.AddTransportOnContext calls lead to shared kerberosRoundTripper transports, enabling attackers to hijack persiste...

CVE-2026-88010

Traefik (open source HTTP reverse proxy and load balancer) versions 3.6.11 through before 3.7.13 contain an unauthenticated username-enumeration timing oracle in the BasicAuth middleware. The checkPassword function in pkg/middlewares/auth/basic_auth.go constructs the singleflight key from the sub...

CVE-2026-88010 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.7.13, checkPassword in pkg/middlewares/auth/basicauth.go constructs the BasicAuth singleflight key from the submitted password and stored secret. Concurrent requests for absent usernames therefore coalesce on one...