CyberRota
← Ana sayfaya dön

CVE-2026-47221

MEDIUM · CVSS 5.9 EPSS %0.45 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-06-26T18:16:59.087 · Çekilme zamanı: 2026-06-30T18:35:58.085064+00:00

CyberRota Yorumu

Detaylı analiz gerekiyor.

Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

Tespit Edilen Sinyaller
exploit
GitHub PoC Linkleri

Not: Bu bağlantılar yalnızca güvenlik araştırması ve doğrulama amacıyla listelenmiştir.

CVE
CVE-2026-47221
Severity
MEDIUM
CVSS
5.9
EPSS
%0.45

Orijinal NVD Açıklaması

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.18.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the router filter contains a null pointer dereference vulnerability when handling HTTP 303 (See Other) internal redirects for body-less non-GET/HEAD requests. When a POST, PUT, DELETE, or PATCH request without a body is sent to a route configured with internal redirect policy that includes 303 in redirect_response_codes, and the upstream responds with HTTP 303, the redirect handling code attempts to drain a request body buffer that was never allocated. This results in a segmentation fault that crashes the entire Envoy process. When route configured with internal_redirect_policy including 303 in redirect_response_codes and upstream must return HTTP 303 response, an unauthenticated attacker can exploit this to cause complete denial of service, terminating all active connections. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.