Skip to content
CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-93569

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

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
redhat

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Build of Apache Camel 3.33.3.SP2

Default version status: affected

  • 4.1.138.Final-redhat-00001 to < *unaffected

Red Hat Red Hat Build of Debezium 3.6

Default version status: unaffected

Red Hat Red Hat build of Quarkus 3.27.5.SP2

Default version status: unaffected

Red Hat Red Hat build of Quarkus 3.33.3.SP2

Default version status: unaffected

Red Hat Red Hat AMQ Broker 7

Default version status: unaffected

Red Hat Red Hat build of Apache Camel 4 for Quarkus 3

Default version status: affected

Red Hat Red Hat build of Apache Camel for Spring Boot 4

Default version status: affected

Red Hat Red Hat build of Apicurio Registry 3

Default version status: affected

Red Hat Red Hat Build of Keycloak

Default version status: affected

Red Hat Red Hat Data Grid 8

Default version status: affected

Red Hat Red Hat Fuse 7

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform 7

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform 8

Default version status: unaffected

Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Default version status: affected

Red Hat Red Hat Single Sign-On 7

Default version status: affected

References