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Vulnerabilities
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CVE-2026-33870

Updated on 27 Mar 2026

Severity

7.5 High severity

Details

CVSS score
7.5
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

Details

Affected product:
Apache Kafka , Apache Lucene , Apache Spark , Eclipse Jetty , Netty , Spring , artemis , async-http-client , avro , azure-sdk-for-java , bolt-connection-java , cassandra-java-driver , couchbase-jvm-clients , cxf , elasticsearch , grpc-netty , infinispan , java-driver , lettuce , logging-flume , logging-log4j2 , neo4j-java-driver , netty , pulsar , rabbitmq-stream-java-client , rsocket-java , tika , wildfly , zookeeper
Affected packages:
netty (+6093 more)
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

Fixes