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7.5 High

CVE-2026-93568 Io.netty/netty-codec-http2: io.netty/netty-codec-http3: netty: http/2 and http/3 extended connect requests are downgraded as regular connect requests

Description

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat AMQ Broker 7 Versions not published
Red Hat build of Apache Camel 4 for Quarkus 3 Versions not published
Red Hat build of Apache Camel for Spring Boot 4 Versions not published
Red Hat build of Apicurio Registry 3 Versions not published
Red Hat build of Debezium 3 Versions not published
Red Hat Build of Keycloak Versions not published
Red Hat build of Quarkus Versions not published
Red Hat Data Grid 8 Versions not published
Red Hat Fuse 7 Versions not published
Show the 9 other branches
Product Affected versions Fixed in
Red Hat JBoss Enterprise Application Platform 7 Versions not published
Red Hat JBoss Enterprise Application Platform 8 Versions not published
Red Hat Single Sign-On 7 Versions not published
Red Hat Build of Apache Camel 3.33.3.SP2 4.1 earliest → < 4.1.138.Final-redhat-00001 4.1.138.Final-redhat-00001
Red Hat build of Quarkus 3.27.5.SP2 Versions not published
Red Hat build of Quarkus 3.33.3.SP2 Versions not published
Red Hat Build of Debezium 3.6 Versions not published
Red Hat JBoss Enterprise Application Platform Expansion Pack Versions not published
Red Hat JBoss Enterprise Application Platform 8.1 Versions not published

References

Timeline

  1. Published
  2. Last modified

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