netty: io.netty/netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation

A flaw was found in Netty. The HttpProxyHandler component, which handles HTTP CONNECT requests, does not properly validate user-provided outbound headers. This allows an attacker to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server. This could lead to unexpected...

SUSE 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...

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...

CVE-2026-42578

Netty CVE-2026-42578 affects HttpProxyHandler prior to 4.2.13.Final and 4.1.133.Final. The issue arises because HttpProxyHandler builds CONNECT requests with header validation disabled (newInitialMessage uses DefaultHttpHeadersFactory.headersFactory().withValidation(false) and then appends user-p...

CVE-2026-42578 Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation

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...

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...

HTTP Header Injection

io.netty, netty-handler-proxy is vulnerable to HTTP Header Injection. The vulnerability is due to improper validation of user-supplied outbound headers in the HttpProxyHandler CONNECT request construction, which allows an attacker to inject arbitrary HTTP headers into requests sent to the proxy...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection in the newInitialMessage function of HttpProxyHandler when header validation is explicitly disabled and user-influenced outboundHeaders are added without sanitization. An attacker can inject arbitrary HTTP headers into...

GHSA-9F9P-CP3C-72JF Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') in trillium-http and trillium-client

Summary Insufficient validation of outbound header values may lead to request splitting or response splitting attacks in scenarios where attackers have sufficient control over outbound headers. Details Outbound trilliumhttp::HeaderValue and trilliumhttp::HeaderName can be constructed infallibly a...

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') in trillium-http and trillium-client

Summary Insufficient validation of outbound header values may lead to request splitting or response splitting attacks in scenarios where attackers have sufficient control over outbound headers. Details Outbound trilliumhttp::HeaderValue and trilliumhttp::HeaderName can be constructed infallibly a...

SwiftNIO vulnerable to Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

NIOHTTP1 and projects using it for generating HTTP responses, including SwiftNIO, can be subject to a HTTP Response Injection attack. This occurs when a HTTP/1.1 server accepts user generated input from an incoming request and reflects it into a HTTP/1.1 response header in some form. A malicious...