CVE-2026-33807
CriticalCVSS 9.1Summary
Wersje @fastify/express do 4.0.4 zawierają błąd w obsłudze ścieżek w funkcji onRegister, który powoduje podwajanie ścieżek middleware w przypadku dziedziczenia przez pluginy podrzędne. To prowadzi do całkowitego ominięcia zabezpieczeń middleware Express, takich jak uwierzytelnianie, autoryzacja i ograniczanie liczby żądań.
Risk Assessment
Organizacja narażona jest na poważne ryzyko związane z bezpieczeństwem, ponieważ wszystkie trasy zdefiniowane w dotkniętych pluginach podrzędnych mogą być dostępne bez odpowiednich kontroli zabezpieczeń. Może to prowadzić do nieautoryzowanego dostępu do zasobów.
Recommendation
Zaleca się aktualizację do wersji @fastify/express 4.0.5 lub nowszej, aby usunąć tę podatność i przywrócić odpowiednie zabezpieczenia.
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Original NVD description (English source)
@fastify/express v4.0.4 and earlier contains a path handling bug in the onRegister function that causes middleware paths to be doubled when inherited by child plugins. When a child plugin is registered with a prefix that matches a middleware path, the middleware path is prefixed a second time, causing it to never match incoming requests. This results in complete bypass of Express middleware security controls, including authentication, authorization, and rate limiting, for all routes defined within affected child plugin scopes. No special configuration or request crafting is required. Upgrade to @fastify/express v4.0.5 or later.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS