CVE details
CVE-2025-67735
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final fix the issue.
Affected ports (1)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| java/netty | netty | 4.1.53_2 | unaddressed | glewis@FreeBSD.org |
Template for a VuXML entry
Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.
<vuln vid="FIXME (make newentry)">
<topic>FIXME -- FIXME</topic>
<affects>
<package>
<name>netty</name>
<range><lt>4.1.129</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>Netty is an asynchronous, event-driven network application framework.
In versions prior to 4.1.129.Final and 4.2.8.Final, the
`io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection
with the request URI when constructing a request. This leads to
request smuggling when `HttpRequestEncoder` is used without proper
sanitization of the URI. Any application / framework using
`HttpRequestEncoder` can be subject to be abused to perform request
smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final
fix the issue.</p>
</body>
</description>
<references>
<cvename>CVE-2025-67735</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2025-67735</url>
</references>
<dates>
<discovery>2025-12-16</discovery>
<entry>2026-10-25</entry>
</dates>
</vuln>