8.2Hoch

CVE-2026-93569Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority

Red Hat Red Hat Build of Apache Camel 3.33.3.SP2; Red Hat Red Hat Build of Debezium 3.6; Red Hat Red Hat build of Keycloak 26.4; Red Hat Red Hat build of Keycl… Veröffentlicht: (vor 1 Monat)

Beschreibung

A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2 :authority field, discarding the original request-target authority. This inconsistency can allow an attacker to bypass security controls in Netty-based proxies or gateways, potentially leading to unauthorized access, cache poisoning, or misrouting of requests.

Schwachstellentyp (CWE): CWE-444

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

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Referenzen und Patches