CVE details
CVE-2026-42580
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
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>4.1.133</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>Netty is an asynchronous, event-driven network application framework.
Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser
silently overflows int, enabling request smuggling attacks. This
vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.</p>
</body>
</description>
<references>
<cvename>CVE-2026-42580</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-42580</url>
</references>
<dates>
<discovery>2026-05-13</discovery>
<entry>2026-10-25</entry>
</dates>
</vuln>