EUVD-2026-47644

Traefik: Authentication Bypass via Path Traversal in ReplacePathRegex Middleware...

CVE-2026-65600

A flaw was found in Traefik. An unauthenticated remote attacker can bypass authentication due to a path traversal vulnerability in the ReplacePathRegex middleware. When this middleware is misconfigured, it forwards un-normalized paths, allowing a backend to resolve them to protected routes and...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal in the ServeHTTP function in pkg/middlewares/replacepathregex/replacepathregex.go, which forwards the post-substitution path to the backend without checking whether it normalizes to a different route. An attacker can...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal in the ServeHTTP function in pkg/middlewares/replacepathregex/replacepathregex.go, which forwards the post-substitution path to the backend without checking whether it normalizes to a different route. An attacker can...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal in the ServeHTTP function in pkg/middlewares/replacepathregex/replacepathregex.go, which forwards the post-substitution path to the backend without checking whether it normalizes to a different route. An attacker can...

CVE-2026-65600

Traefik versions = v3.6.0 = v3.7.0 = v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator e.g. regex "^/api.", replacement "/$1...

CVE-2026-65600 Traefik before v2.11.52 Authentication Bypass via ReplacePathRegex

Traefik versions = v3.6.0 = v3.7.0 = v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator e.g. regex "^/api.", replacement "/$1...

CVE-2026-65600

Traefik contains an authentication bypass in the ReplacePathRegex middleware for certain versions. Vulnerable were Traefik builds with ReplacePathRegex configured to capture user-controlled path segments without a mandatory path separator, allowing un-normalized paths (e.g., /api../admin) to bypa...