Skip to main content
Components
Vulnerabilities
Security Events
Pricing
MCP
API
Docs
Sign up
Login
Find vulnerabilities. Fix fast with AI.
Search components by package, version, or CVE to get started.
io.netty/netty-handler-proxy 4.2.8.Final |… | Sonatype Guide
Get full component data and automated fixes with Sonatype Guide.
Sign up for free
maven
io.netty
netty-handler-proxy
4.2.8.Final
netty-handler-proxy 4.2.8.Final
io.netty
Published
Dec 11, 2025
•
Policy
compliance
maven Registry
Developer Trust Score
Recommended Version:
x.y.z
Recommended upgrade that meets your policy.
Compare Versions
Overview
Overview
Versions
183
Versions
183
Vulnerabilities
1
Vulnerabilities
1
Dependencies
7
Dependencies
7
Severity
Critical
(0)
High
(1)
Medium
(0)
Low
(0)
CVSS Score
0.0
10.0
EPSS Score
0.0
1.0
Malware
KEV Status
Published
Filter
Sort: Published (Newest first)
7.5
CVE-2026-42578
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly disabled. The newInitialMessage() method creates headers using DefaultHttpHeadersFactory.headersFactory().withValidation(false), then adds user-provided outboundHeaders without any CRLF validation. This allows an attacker who can influence the outbound headers to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
affected
Severity
High
Published
May 8, 2026
