CVE-2026-93569

Fixed in a distro release EPSS 2%CVSS 8.2

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.

Published 2026-09-18 · CVE record · OSV

Products: Red Hat Build of Apache Camel 3.33.3.SP2, Red Hat Build of Debezium 3.6, Red Hat build of Quarkus 3.27.5.SP2, Red Hat build of Quarkus 3.33.3.SP2, Red Hat AMQ Broker 7, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Apache Camel for Spring Boot 4, Red Hat build of Apicurio Registry 3, Red Hat Build of Keycloak, Red Hat Data Grid 8, Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat JBoss Enterprise Application Platform 8, Red Hat JBoss Enterprise Application Platform Expansion Pack, Red Hat Single Sign-On 7

Distro releases