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8.7 High

CVE-2026-33871 Netty is an asynchronous, event-driven network application framework

Description

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

Affected products and versions

Product Affected versions Fixed in
netty 4.2 4.2.0.Alpha1 → < 4.2.10.Final 4.2.10.Final
netty 4.1 earliest → < 4.1.132.Final 4.1.132.Final
Red Hat JBoss EAP 8.1 for RHEL 8 Versions not published
Cryostat 4 on RHEL 9 4.2 earliest → < 4.2.0-9 4.2.0-9
Red Hat JBoss EAP 8.1 for RHEL 9 Versions not published
Red Hat AMQ Broker 7.12.7 Versions not published
Red Hat AMQ Broker 7.13.5 Versions not published
Red Hat AMQ Broker 7.14.0 Versions not published
Red Hat Build of Apache Camel 4.14 for Quarkus 3.27 Versions not published
Show the 35 other branches
Product Affected versions Fixed in
Red Hat Data Grid 8.6.1 Versions not published
Red Hat JBoss Enterprise Application Platform 8.1 Versions not published
Red Hat OpenShift AI 2.25 1788198681 earliest → < 1788198681 1788198681
Red Hat OpenShift Dev Spaces 3.27 1776796445 earliest → < 1776796445 1776796445
Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 Versions not published
Red Hat build of Quarkus 3.20.6 Versions not published
Red Hat build of Quarkus 3.27.3 Versions not published
Streams for Apache Kafka 3.2.0 Versions not published
Cryostat 4 Versions not published
Logging Subsystem for Red Hat OpenShift Versions not published
OpenShift Serverless Versions not published
Red Hat AMQ Clients Versions not published
Red Hat build of Apache Camel - HawtIO 4 Versions not published
Red Hat build of Apache Camel 4 for Quarkus 3 Versions not published
Red Hat build of Apicurio Registry 2 Versions not published
Red Hat build of Apicurio Registry 3 Versions not published
Red Hat build of Debezium 2 Versions not published
Red Hat build of Debezium 3 Versions not published
Red Hat Build of Keycloak Versions not published
Red Hat build of OptaPlanner 8 Versions not published
Red Hat build of Quarkus Versions not published
Red Hat Enterprise Linux AI (RHEL AI) 3 Versions not published
Red Hat Fuse 7 Versions not published
Red Hat JBoss Enterprise Application Platform 7 Versions not published
Red Hat JBoss Enterprise Application Platform Expansion Pack Versions not published
Red Hat OpenShift AI (RHOAI) Versions not published
Red Hat Process Automation 7 Versions not published
Red Hat Single Sign-On 7 Versions not published
streams for Apache Kafka 2 Versions not published
Red Hat JBoss Enterprise Application Platform 8 Versions not published
Red Hat Satellite 6 Versions not published
streams for Apache Kafka 3 Versions not published
Streams for Apache Kafka 2.9.4 Versions not published
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 Versions not published
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of netty

The 95 CVEs of netty →
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