CVE-2026-42580 — Netty: HTTP Request Smuggling due to incorrect chunk size parsing
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…
Published: 2026-05-13 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7